Csharp/C Sharp by API/System.Windows.Forms/RichTextBox
Содержание
RichTextBox.Focus()
<source lang="csharp">
using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms;
class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void buttonBold_Click(object sender, EventArgs e) {
Font oldFont;
Font newFont;
oldFont = this.richTextBoxText.SelectionFont;
if (oldFont.Bold)
newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Bold);
else
newFont = new Font(oldFont, oldFont.Style | FontStyle.Bold);
this.richTextBoxText.SelectionFont = newFont;
this.richTextBoxText.Focus();
}
private void buttonUnderline_Click(object sender, EventArgs e) {
Font oldFont;
Font newFont;
oldFont = this.richTextBoxText.SelectionFont;
if (oldFont.Underline)
newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Underline);
else
newFont = new Font(oldFont, oldFont.Style | FontStyle.Underline);
this.richTextBoxText.SelectionFont = newFont;
this.richTextBoxText.Focus();
}
private void buttonItalic_Click(object sender, EventArgs e) {
Font oldFont;
Font newFont;
oldFont = this.richTextBoxText.SelectionFont;
if (oldFont.Italic)
newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Italic);
else
newFont = new Font(oldFont, oldFont.Style | FontStyle.Italic);
this.richTextBoxText.SelectionFont = newFont;
this.richTextBoxText.Focus();
}
private void buttonCenter_Click(object sender, EventArgs e) {
if (this.richTextBoxText.SelectionAlignment == HorizontalAlignment.Center)
this.richTextBoxText.SelectionAlignment = HorizontalAlignment.Left;
else
this.richTextBoxText.SelectionAlignment = HorizontalAlignment.Center;
this.richTextBoxText.Focus();
}
private void textBoxSize_KeyPress(object sender, KeyPressEventArgs e) {
if ((e.KeyChar < 48 || e.KeyChar > 57) &&
e.KeyChar != 8 && e.KeyChar != 13) {
e.Handled = true;
} else if (e.KeyChar == 13) {
TextBox txt = (TextBox)sender;
if (txt.Text.Length > 0)
ApplyTextSize(txt.Text);
e.Handled = true;
this.richTextBoxText.Focus();
}
}
private void textBoxSize_Validating(object sender, CancelEventArgs e) {
TextBox txt = (TextBox)sender;
ApplyTextSize(txt.Text);
this.richTextBoxText.Focus();
}
private void ApplyTextSize(string textSize) {
float newSize = Convert.ToSingle(textSize);
FontFamily currentFontFamily;
Font newFont;
currentFontFamily = this.richTextBoxText.SelectionFont.FontFamily;
newFont = new Font(currentFontFamily, newSize);
this.richTextBoxText.SelectionFont = newFont;
}
private void richTextBoxText_LinkClicked(object sender, LinkClickedEventArgs e) {
System.Diagnostics.Process.Start(e.LinkText);
}
private void buttonLoad_Click(object sender, EventArgs e) {
try {
richTextBoxText.LoadFile("Test.rtf");
} catch (System.IO.FileNotFoundException) {
MessageBox.Show("No file to load yet");
}
}
private void buttonSave_Click(object sender, EventArgs e) {
try {
richTextBoxText.SaveFile("Test.rtf");
} catch (System.Exception err) {
MessageBox.Show(err.Message);
}
}
private void InitializeComponent() {
this.buttonBold = new System.Windows.Forms.Button();
this.buttonUnderline = new System.Windows.Forms.Button();
this.buttonItalic = new System.Windows.Forms.Button();
this.buttonCenter = new System.Windows.Forms.Button();
this.buttonSave = new System.Windows.Forms.Button();
this.buttonLoad = new System.Windows.Forms.Button();
this.labelSize = new System.Windows.Forms.Label();
this.textBoxSize = new System.Windows.Forms.TextBox();
this.richTextBoxText = new System.Windows.Forms.RichTextBox();
this.SuspendLayout();
this.buttonBold.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.buttonBold.Location = new System.Drawing.Point(187, 13);
this.buttonBold.Margin = new System.Windows.Forms.Padding(3, 3, 3, 1);
this.buttonBold.Name = "buttonBold";
this.buttonBold.Size = new System.Drawing.Size(82, 23);
this.buttonBold.TabIndex = 0;
this.buttonBold.Text = "Bold";
this.buttonBold.Click += new System.EventHandler(this.buttonBold_Click);
this.buttonUnderline.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.buttonUnderline.Location = new System.Drawing.Point(276, 13);
this.buttonUnderline.Margin = new System.Windows.Forms.Padding(3, 3, 3, 1);
this.buttonUnderline.Name = "buttonUnderline";
this.buttonUnderline.Size = new System.Drawing.Size(82, 23);
this.buttonUnderline.TabIndex = 1;
this.buttonUnderline.Text = "Underline";
this.buttonUnderline.Click += new System.EventHandler(this.buttonUnderline_Click);
this.buttonItalic.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.buttonItalic.Location = new System.Drawing.Point(365, 13);
this.buttonItalic.Name = "buttonItalic";
this.buttonItalic.Size = new System.Drawing.Size(82, 23);
this.buttonItalic.TabIndex = 2;
this.buttonItalic.Text = "Italic";
this.buttonItalic.Click += new System.EventHandler(this.buttonItalic_Click);
this.buttonCenter.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.buttonCenter.Location = new System.Drawing.Point(454, 13);
this.buttonCenter.Margin = new System.Windows.Forms.Padding(3, 0, 3, 3);
this.buttonCenter.Name = "buttonCenter";
this.buttonCenter.Size = new System.Drawing.Size(82, 23);
this.buttonCenter.TabIndex = 3;
this.buttonCenter.Text = "Center";
this.buttonCenter.Click += new System.EventHandler(this.buttonCenter_Click);
this.buttonSave.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.buttonSave.Location = new System.Drawing.Point(365, 309);
this.buttonSave.Margin = new System.Windows.Forms.Padding(3, 0, 3, 3);
this.buttonSave.Name = "buttonSave";
this.buttonSave.Size = new System.Drawing.Size(82, 23);
this.buttonSave.TabIndex = 4;
this.buttonSave.Text = "Save";
this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
this.buttonLoad.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.buttonLoad.Location = new System.Drawing.Point(276, 309);
this.buttonLoad.Name = "buttonLoad";
this.buttonLoad.Size = new System.Drawing.Size(82, 23);
this.buttonLoad.TabIndex = 5;
this.buttonLoad.Text = "Load";
this.buttonLoad.Click += new System.EventHandler(this.buttonLoad_Click);
this.labelSize.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.labelSize.AutoSize = true;
this.labelSize.Location = new System.Drawing.Point(295, 46);
this.labelSize.Name = "labelSize";
this.labelSize.Size = new System.Drawing.Size(26, 14);
this.labelSize.TabIndex = 6;
this.labelSize.Text = "Size";
this.textBoxSize.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.textBoxSize.Location = new System.Drawing.Point(328, 43);
this.textBoxSize.Name = "textBoxSize";
this.textBoxSize.TabIndex = 7;
this.textBoxSize.Text = "10";
this.textBoxSize.Validating += new System.ruponentModel.CancelEventHandler(this.textBoxSize_Validating);
this.textBoxSize.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBoxSize_KeyPress);
this.richTextBoxText.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.richTextBoxText.Location = new System.Drawing.Point(13, 70);
this.richTextBoxText.Name = "richTextBoxText";
this.richTextBoxText.Size = new System.Drawing.Size(686, 232);
this.richTextBoxText.TabIndex = 8;
this.richTextBoxText.Text = "";
this.richTextBoxText.LinkClicked += new System.Windows.Forms.LinkClickedEventHandler(this.richTextBoxText_LinkClicked);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(722, 341);
this.Controls.Add(this.richTextBoxText);
this.Controls.Add(this.textBoxSize);
this.Controls.Add(this.labelSize);
this.Controls.Add(this.buttonLoad);
this.Controls.Add(this.buttonSave);
this.Controls.Add(this.buttonCenter);
this.Controls.Add(this.buttonItalic);
this.Controls.Add(this.buttonUnderline);
this.Controls.Add(this.buttonBold);
this.MinimumSize = new System.Drawing.Size(730, 368);
this.Name = "Form1";
this.Text = "RichTextBox Test";
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.Button buttonBold;
private System.Windows.Forms.Button buttonUnderline;
private System.Windows.Forms.Button buttonItalic;
private System.Windows.Forms.Button buttonCenter;
private System.Windows.Forms.Button buttonSave;
private System.Windows.Forms.Button buttonLoad;
private System.Windows.Forms.Label labelSize;
private System.Windows.Forms.TextBox textBoxSize;
private System.Windows.Forms.RichTextBox richTextBoxText;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
RichTextBox.Multiline
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms; public class FontConstructor1 : Form {
public FontConstructor1()
{
Size = new Size(350,200);
Font fnt = Font;
fnt = new Font(fnt, FontStyle.Bold | FontStyle.Italic);
Font = fnt;
RichTextBox rtxt = new RichTextBox();
rtxt.Text = "first line.\n" +
"This is a second line of text.";
rtxt.Text += "\nFont Name:\t" + Font.Name;
rtxt.Text += "\nFont Family:\t" + Font.FontFamily;
rtxt.Text += "\nFont Styles:\t" + Font.Style;
rtxt.Text += "\nFont Size:\t" + Font.Size;
rtxt.Text += "\nFont Height:\t" + Font.Height;
rtxt.Text += "\nFont Units:\t" + Font.Unit;
rtxt.Multiline = true;
rtxt.Dock = DockStyle.Fill;
rtxt.Parent = this;
}
static void Main()
{
Application.Run(new FontConstructor1());
}
}
</source>
RichTextBox.SelectionChanged
<source lang="csharp">
using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; using System.Drawing.Text; public class Form1 : Form {
private System.Windows.Forms.RichTextBox richTextBox1;
private System.Windows.Forms.ToolStrip toolStrip1;
private System.Windows.Forms.ToolStripButton cmdUnderline;
private System.Windows.Forms.ToolStripButton cmdBold;
private System.Windows.Forms.ToolStripButton cmdItalic;
private System.Windows.Forms.ToolStripSeparator toolStripSeparator1;
private System.Windows.Forms.ToolStripDropDownButton lstColors;
private System.Windows.Forms.ToolStripDropDownButton lstFonts;
private System.Windows.Forms.ToolStripDropDownButton lstZoom;
private System.Windows.Forms.ToolStripDropDownButton lstFontSize;
private System.Windows.Forms.ToolStripSeparator toolStripSeparator2;
private System.Windows.Forms.Button cmdAddImage;
public Form1() {
InitializeComponent();
}
private void richTextBox1_SelectionChanged(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont != null)
{
cmdBold.Checked = richTextBox1.SelectionFont.Bold;
cmdItalic.Checked = richTextBox1.SelectionFont.Italic;
cmdUnderline.Checked = richTextBox1.SelectionFont.Underline;
}
}
private void cmdBold_Click(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
FontStyle style = richTextBox1.SelectionFont.Style;
if (richTextBox1.SelectionFont.Bold)
{
style &= ~FontStyle.Bold;
}
else
{
style |= FontStyle.Bold;
}
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
}
private void cmdItalic_Click(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
FontStyle style = richTextBox1.SelectionFont.Style;
if (richTextBox1.SelectionFont.Italic)
{
style &= ~FontStyle.Italic;
}
else
{
style |= FontStyle.Italic;
}
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
}
private void cmdUnderline_Click(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
FontStyle style = richTextBox1.SelectionFont.Style;
if (richTextBox1.SelectionFont.Underline)
{
style &= ~FontStyle.Underline;
}
else
{
style |= FontStyle.Underline;
}
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
}
private void Form1_Load(object sender, EventArgs e)
{
lstColors.DropDown.Items.Add("Red");
lstColors.DropDown.Items.Add("Blue");
InstalledFontCollection fonts = new InstalledFontCollection();
foreach (FontFamily family in fonts.Families)
{
lstFonts.DropDown.Items.Add(family.Name);
}
lstZoom.DropDown.Items.Add("300%");
lstZoom.DropDown.Items.Add("200%");
lstZoom.DropDown.Items.Add("100%");
lstFontSize.DropDown.Items.Add("8");
lstFontSize.DropDown.Items.Add("10");
lstFontSize.DropDown.Items.Add("12");
}
private void lstColors_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
KnownColor selectedColor;
selectedColor = (KnownColor)System.Enum.Parse(typeof(KnownColor), e.ClickedItem.Text);
richTextBox1.SelectionColor = Color.FromKnownColor(selectedColor);
}
private void lstFonts_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
richTextBox1.SelectionFont = new Font(e.ClickedItem.Text, richTextBox1.Font.Size);
}
richTextBox1.SelectionFont = new Font(e.ClickedItem.Text, richTextBox1.SelectionFont.Size);
}
private void lstZoom_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
float zoomPercent = Convert.ToSingle(e.ClickedItem.Text.Trim("%"));
richTextBox1.ZoomFactor = zoomPercent / 100;
}
private void lstFontSize_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
richTextBox1.SelectionFont =new Font(richTextBox1.SelectionFont.FontFamily,
Convert.ToInt32(e.ClickedItem.Text),
richTextBox1.SelectionFont.Style);
}
private void cmdAddImage_Click(object sender, EventArgs e)
{
Image img = Image.FromFile("winter.jpg");
Clipboard.SetImage(img);
richTextBox1.SelectionStart = 0;
richTextBox1.Paste();
Clipboard.Clear();
}
private void InitializeComponent()
{
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.toolStrip1 = new System.Windows.Forms.ToolStrip();
this.cmdBold = new System.Windows.Forms.ToolStripButton();
this.cmdItalic = new System.Windows.Forms.ToolStripButton();
this.cmdUnderline = new System.Windows.Forms.ToolStripButton();
this.toolStripSeparator1 = new System.Windows.Forms.ToolStripSeparator();
this.lstColors = new System.Windows.Forms.ToolStripDropDownButton();
this.lstFonts = new System.Windows.Forms.ToolStripDropDownButton();
this.lstFontSize = new System.Windows.Forms.ToolStripDropDownButton();
this.toolStripSeparator2 = new System.Windows.Forms.ToolStripSeparator();
this.lstZoom = new System.Windows.Forms.ToolStripDropDownButton();
this.cmdAddImage = new System.Windows.Forms.Button();
this.toolStrip1.SuspendLayout();
this.SuspendLayout();
//
// richTextBox1
//
this.richTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.richTextBox1.BulletIndent = 5;
this.richTextBox1.Location = new System.Drawing.Point(12, 37);
this.richTextBox1.Margin = new System.Windows.Forms.Padding(5);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(317, 197);
this.richTextBox1.TabIndex = 0;
this.richTextBox1.Text = "adfasdf";
this.richTextBox1.SelectionChanged += new System.EventHandler(this.richTextBox1_SelectionChanged);
//
// toolStrip1
//
this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.cmdBold,
this.cmdItalic,
this.cmdUnderline,
this.toolStripSeparator1,
this.lstColors,
this.lstFonts,
this.lstFontSize,
this.toolStripSeparator2,
this.lstZoom});
this.toolStrip1.Location = new System.Drawing.Point(0, 0);
this.toolStrip1.Name = "toolStrip1";
this.toolStrip1.Size = new System.Drawing.Size(341, 25);
this.toolStrip1.TabIndex = 1;
this.toolStrip1.Text = "toolStrip1";
//
// cmdBold
//
this.cmdBold.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.cmdBold.ImageTransparentColor = System.Drawing.Color.Magenta;
this.cmdBold.Name = "cmdBold";
this.cmdBold.Size = new System.Drawing.Size(31, 22);
this.cmdBold.Text = "Bold";
this.cmdBold.Click += new System.EventHandler(this.cmdBold_Click);
//
// cmdItalic
//
this.cmdItalic.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.cmdItalic.ImageTransparentColor = System.Drawing.Color.Magenta;
this.cmdItalic.Name = "cmdItalic";
this.cmdItalic.Size = new System.Drawing.Size(34, 22);
this.cmdItalic.Text = "Italic";
this.cmdItalic.Click += new System.EventHandler(this.cmdItalic_Click);
//
// cmdUnderline
//
this.cmdUnderline.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.cmdUnderline.ImageTransparentColor = System.Drawing.Color.Magenta;
this.cmdUnderline.Name = "cmdUnderline";
this.cmdUnderline.Size = new System.Drawing.Size(56, 22);
this.cmdUnderline.Text = "Underline";
this.cmdUnderline.Click += new System.EventHandler(this.cmdUnderline_Click);
//
// toolStripSeparator1
//
this.toolStripSeparator1.Name = "toolStripSeparator1";
this.toolStripSeparator1.Size = new System.Drawing.Size(6, 25);
//
// lstColors
//
this.lstColors.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstColors.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstColors.Name = "lstColors";
this.lstColors.Size = new System.Drawing.Size(45, 22);
this.lstColors.Text = "Color";
this.lstColors.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstColors_DropDownItemClicked);
//
// lstFonts
//
this.lstFonts.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstFonts.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstFonts.Name = "lstFonts";
this.lstFonts.Size = new System.Drawing.Size(42, 22);
this.lstFonts.Text = "Font";
this.lstFonts.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstFonts_DropDownItemClicked);
//
// lstFontSize
//
this.lstFontSize.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstFontSize.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstFontSize.Name = "lstFontSize";
this.lstFontSize.Size = new System.Drawing.Size(39, 22);
this.lstFontSize.Text = "Size";
this.lstFontSize.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstFontSize_DropDownItemClicked);
//
// toolStripSeparator2
//
this.toolStripSeparator2.Name = "toolStripSeparator2";
this.toolStripSeparator2.Size = new System.Drawing.Size(6, 25);
//
// lstZoom
//
this.lstZoom.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstZoom.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstZoom.Name = "lstZoom";
this.lstZoom.Size = new System.Drawing.Size(46, 22);
this.lstZoom.Text = "Zoom";
this.lstZoom.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstZoom_DropDownItemClicked);
//
// cmdAddImage
//
this.cmdAddImage.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.cmdAddImage.Location = new System.Drawing.Point(12, 237);
this.cmdAddImage.Name = "cmdAddImage";
this.cmdAddImage.Size = new System.Drawing.Size(154, 23);
this.cmdAddImage.TabIndex = 2;
this.cmdAddImage.Text = "Insert Image";
this.cmdAddImage.UseVisualStyleBackColor = true;
this.cmdAddImage.Click += new System.EventHandler(this.cmdAddImage_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(341, 266);
this.Controls.Add(this.cmdAddImage);
this.Controls.Add(this.toolStrip1);
this.Controls.Add(this.richTextBox1);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "RichTextBox Test";
this.Load += new System.EventHandler(this.Form1_Load);
this.toolStrip1.ResumeLayout(false);
this.toolStrip1.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
RichTextBox.SelectionFont
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; using System.Drawing.Text; public class Form1 : Form {
private System.Windows.Forms.RichTextBox richTextBox1;
private System.Windows.Forms.ToolStrip toolStrip1;
private System.Windows.Forms.ToolStripButton cmdUnderline;
private System.Windows.Forms.ToolStripButton cmdBold;
private System.Windows.Forms.ToolStripButton cmdItalic;
private System.Windows.Forms.ToolStripSeparator toolStripSeparator1;
private System.Windows.Forms.ToolStripDropDownButton lstColors;
private System.Windows.Forms.ToolStripDropDownButton lstFonts;
private System.Windows.Forms.ToolStripDropDownButton lstZoom;
private System.Windows.Forms.ToolStripDropDownButton lstFontSize;
private System.Windows.Forms.ToolStripSeparator toolStripSeparator2;
private System.Windows.Forms.Button cmdAddImage;
public Form1() {
InitializeComponent();
}
private void richTextBox1_SelectionChanged(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont != null)
{
cmdBold.Checked = richTextBox1.SelectionFont.Bold;
cmdItalic.Checked = richTextBox1.SelectionFont.Italic;
cmdUnderline.Checked = richTextBox1.SelectionFont.Underline;
}
}
private void cmdBold_Click(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
FontStyle style = richTextBox1.SelectionFont.Style;
if (richTextBox1.SelectionFont.Bold)
{
style &= ~FontStyle.Bold;
}
else
{
style |= FontStyle.Bold;
}
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
}
private void cmdItalic_Click(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
FontStyle style = richTextBox1.SelectionFont.Style;
if (richTextBox1.SelectionFont.Italic)
{
style &= ~FontStyle.Italic;
}
else
{
style |= FontStyle.Italic;
}
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
}
private void cmdUnderline_Click(object sender, EventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
FontStyle style = richTextBox1.SelectionFont.Style;
if (richTextBox1.SelectionFont.Underline)
{
style &= ~FontStyle.Underline;
}
else
{
style |= FontStyle.Underline;
}
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
}
private void Form1_Load(object sender, EventArgs e)
{
lstColors.DropDown.Items.Add("Red");
lstColors.DropDown.Items.Add("Blue");
InstalledFontCollection fonts = new InstalledFontCollection();
foreach (FontFamily family in fonts.Families)
{
lstFonts.DropDown.Items.Add(family.Name);
}
lstZoom.DropDown.Items.Add("300%");
lstZoom.DropDown.Items.Add("200%");
lstZoom.DropDown.Items.Add("100%");
lstFontSize.DropDown.Items.Add("8");
lstFontSize.DropDown.Items.Add("10");
lstFontSize.DropDown.Items.Add("12");
}
private void lstColors_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
KnownColor selectedColor;
selectedColor = (KnownColor)System.Enum.Parse(typeof(KnownColor), e.ClickedItem.Text);
richTextBox1.SelectionColor = Color.FromKnownColor(selectedColor);
}
private void lstFonts_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
richTextBox1.SelectionFont = new Font(e.ClickedItem.Text, richTextBox1.Font.Size);
}
richTextBox1.SelectionFont = new Font(e.ClickedItem.Text, richTextBox1.SelectionFont.Size);
}
private void lstZoom_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
float zoomPercent = Convert.ToSingle(e.ClickedItem.Text.Trim("%"));
richTextBox1.ZoomFactor = zoomPercent / 100;
}
private void lstFontSize_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (richTextBox1.SelectionFont == null)
{
return;
}
richTextBox1.SelectionFont =new Font(richTextBox1.SelectionFont.FontFamily,
Convert.ToInt32(e.ClickedItem.Text),
richTextBox1.SelectionFont.Style);
}
private void cmdAddImage_Click(object sender, EventArgs e)
{
Image img = Image.FromFile("winter.jpg");
Clipboard.SetImage(img);
richTextBox1.SelectionStart = 0;
richTextBox1.Paste();
Clipboard.Clear();
}
private void InitializeComponent()
{
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.toolStrip1 = new System.Windows.Forms.ToolStrip();
this.cmdBold = new System.Windows.Forms.ToolStripButton();
this.cmdItalic = new System.Windows.Forms.ToolStripButton();
this.cmdUnderline = new System.Windows.Forms.ToolStripButton();
this.toolStripSeparator1 = new System.Windows.Forms.ToolStripSeparator();
this.lstColors = new System.Windows.Forms.ToolStripDropDownButton();
this.lstFonts = new System.Windows.Forms.ToolStripDropDownButton();
this.lstFontSize = new System.Windows.Forms.ToolStripDropDownButton();
this.toolStripSeparator2 = new System.Windows.Forms.ToolStripSeparator();
this.lstZoom = new System.Windows.Forms.ToolStripDropDownButton();
this.cmdAddImage = new System.Windows.Forms.Button();
this.toolStrip1.SuspendLayout();
this.SuspendLayout();
//
// richTextBox1
//
this.richTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.richTextBox1.BulletIndent = 5;
this.richTextBox1.Location = new System.Drawing.Point(12, 37);
this.richTextBox1.Margin = new System.Windows.Forms.Padding(5);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(317, 197);
this.richTextBox1.TabIndex = 0;
this.richTextBox1.Text = "adfasdf";
this.richTextBox1.SelectionChanged += new System.EventHandler(this.richTextBox1_SelectionChanged);
//
// toolStrip1
//
this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.cmdBold,
this.cmdItalic,
this.cmdUnderline,
this.toolStripSeparator1,
this.lstColors,
this.lstFonts,
this.lstFontSize,
this.toolStripSeparator2,
this.lstZoom});
this.toolStrip1.Location = new System.Drawing.Point(0, 0);
this.toolStrip1.Name = "toolStrip1";
this.toolStrip1.Size = new System.Drawing.Size(341, 25);
this.toolStrip1.TabIndex = 1;
this.toolStrip1.Text = "toolStrip1";
//
// cmdBold
//
this.cmdBold.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.cmdBold.ImageTransparentColor = System.Drawing.Color.Magenta;
this.cmdBold.Name = "cmdBold";
this.cmdBold.Size = new System.Drawing.Size(31, 22);
this.cmdBold.Text = "Bold";
this.cmdBold.Click += new System.EventHandler(this.cmdBold_Click);
//
// cmdItalic
//
this.cmdItalic.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.cmdItalic.ImageTransparentColor = System.Drawing.Color.Magenta;
this.cmdItalic.Name = "cmdItalic";
this.cmdItalic.Size = new System.Drawing.Size(34, 22);
this.cmdItalic.Text = "Italic";
this.cmdItalic.Click += new System.EventHandler(this.cmdItalic_Click);
//
// cmdUnderline
//
this.cmdUnderline.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.cmdUnderline.ImageTransparentColor = System.Drawing.Color.Magenta;
this.cmdUnderline.Name = "cmdUnderline";
this.cmdUnderline.Size = new System.Drawing.Size(56, 22);
this.cmdUnderline.Text = "Underline";
this.cmdUnderline.Click += new System.EventHandler(this.cmdUnderline_Click);
//
// toolStripSeparator1
//
this.toolStripSeparator1.Name = "toolStripSeparator1";
this.toolStripSeparator1.Size = new System.Drawing.Size(6, 25);
//
// lstColors
//
this.lstColors.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstColors.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstColors.Name = "lstColors";
this.lstColors.Size = new System.Drawing.Size(45, 22);
this.lstColors.Text = "Color";
this.lstColors.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstColors_DropDownItemClicked);
//
// lstFonts
//
this.lstFonts.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstFonts.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstFonts.Name = "lstFonts";
this.lstFonts.Size = new System.Drawing.Size(42, 22);
this.lstFonts.Text = "Font";
this.lstFonts.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstFonts_DropDownItemClicked);
//
// lstFontSize
//
this.lstFontSize.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstFontSize.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstFontSize.Name = "lstFontSize";
this.lstFontSize.Size = new System.Drawing.Size(39, 22);
this.lstFontSize.Text = "Size";
this.lstFontSize.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstFontSize_DropDownItemClicked);
//
// toolStripSeparator2
//
this.toolStripSeparator2.Name = "toolStripSeparator2";
this.toolStripSeparator2.Size = new System.Drawing.Size(6, 25);
//
// lstZoom
//
this.lstZoom.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
this.lstZoom.ImageTransparentColor = System.Drawing.Color.Magenta;
this.lstZoom.Name = "lstZoom";
this.lstZoom.Size = new System.Drawing.Size(46, 22);
this.lstZoom.Text = "Zoom";
this.lstZoom.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.lstZoom_DropDownItemClicked);
//
// cmdAddImage
//
this.cmdAddImage.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.cmdAddImage.Location = new System.Drawing.Point(12, 237);
this.cmdAddImage.Name = "cmdAddImage";
this.cmdAddImage.Size = new System.Drawing.Size(154, 23);
this.cmdAddImage.TabIndex = 2;
this.cmdAddImage.Text = "Insert Image";
this.cmdAddImage.UseVisualStyleBackColor = true;
this.cmdAddImage.Click += new System.EventHandler(this.cmdAddImage_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(341, 266);
this.Controls.Add(this.cmdAddImage);
this.Controls.Add(this.toolStrip1);
this.Controls.Add(this.richTextBox1);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "RichTextBox Test";
this.Load += new System.EventHandler(this.Form1_Load);
this.toolStrip1.ResumeLayout(false);
this.toolStrip1.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
RichTextBox.SelectionLength
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms; using System.IO; public class RichTextBoxes : Form {
RichTextBox rtxt;
public RichTextBoxes()
{
Size = new Size(400, 500);
rtxt = new RichTextBox();
rtxt.Parent = this;
rtxt.Text = "Enter text here.";
rtxt.Multiline = true;
rtxt.BorderStyle = BorderStyle.Fixed3D;
rtxt.ScrollBars = RichTextBoxScrollBars.ForcedBoth;
rtxt.Dock = DockStyle.Fill;
rtxt.DetectUrls = true;
rtxt.AutoWordSelection = true;
rtxt.BulletIndent = 10;
rtxt.ShowSelectionMargin = true;
MenuItem mnuImport = new MenuItem("&Import",new EventHandler(mnuImport_Click));
MenuItem mnuFile = new MenuItem("&File",new MenuItem[] {mnuImport});
MenuItem mnuDash1 = new MenuItem("-");
MenuItem mnuDash2 = new MenuItem("-");
MenuItem mnuUndo = new MenuItem("&Undo",new EventHandler(mnuUndo_Click),Shortcut.CtrlZ);
MenuItem mnuCut = new MenuItem("Cu&t", new EventHandler(mnuCut_Click), Shortcut.CtrlX);
MenuItem mnuCopy = new MenuItem("&Copy",new EventHandler(mnuCopy_Click),Shortcut.CtrlC);
MenuItem mnuCopyRtf = new MenuItem("Copy &Rtf", new EventHandler(mnuCopyRtf_Click));
MenuItem mnuPaste = new MenuItem("&Paste",new EventHandler(mnuPaste_Click),Shortcut.CtrlV);
MenuItem mnuDelete = new MenuItem("&Delete",new EventHandler(mnuDelete_Click));
MenuItem mnuSelectAll = new MenuItem("Select &All", new EventHandler(mnuSelectAll_Click),Shortcut.CtrlA);
MenuItem mnuSelect5 = new MenuItem("Select First &5",new EventHandler(mnuSelect5_Click),Shortcut.Ctrl5);
MenuItem mnuClear = new MenuItem("Clea&r",new EventHandler(mnuClear_Click));
MenuItem mnuEdit = new MenuItem("&Edit",new MenuItem[] {mnuUndo, mnuDash1,
mnuCut, mnuCopy, mnuCopyRtf, mnuPaste,
mnuDelete, mnuDash2, mnuSelectAll,
mnuSelect5, mnuClear});
MenuItem mnuScrollToCaret = new MenuItem("&Scroll to Caret",new EventHandler(mnuScrollToCaret_Click));
MenuItem mnuView = new MenuItem("&View",new MenuItem[] {mnuScrollToCaret});
MenuItem mnuAlignLeft = new MenuItem("Align&Left",new EventHandler(mnuAlignLeft_Click));
MenuItem mnuAlignRight = new MenuItem("Align&Right",new EventHandler(mnuAlignRight_Click));
MenuItem mnuAlignCenter = new MenuItem("Align&Center",new EventHandler(mnuAlignCenter_Click));
MenuItem mnuBullet = new MenuItem("&Bullet",new EventHandler(mnuBullet_Click));
MenuItem mnuAlign = new MenuItem("&Align",new MenuItem[] {mnuAlignLeft, mnuAlignRight, mnuAlignCenter});
MenuItem mnuRed = new MenuItem("&Red",new EventHandler(mnuRed_Click));
MenuItem mnuBold = new MenuItem("Bo&ld",new EventHandler(mnuBold_Click));
MenuItem mnuHang = new MenuItem("&Hanging Indent",new EventHandler(mnuHang_Click));
MenuItem mnuIndent = new MenuItem("&Indent",new EventHandler(mnuIndent_Click));
MenuItem mnuRightIndent = new MenuItem("&Right Indent", new EventHandler(mnuRightIndent_Click));
MenuItem mnuFormat = new MenuItem("For&mat",new MenuItem[] {mnuBullet, mnuAlign,
mnuRed, mnuBold, mnuHang, mnuIndent,
mnuRightIndent});
Menu = new MainMenu(new MenuItem[] {mnuFile, mnuEdit,
mnuView, mnuFormat});
}
static void Main()
{
Application.Run(new RichTextBoxes());
}
private void mnuImport_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.InitialDirectory = @"c:\";
ofd.Filter = "RTF files (*.rtf)|*.rtf|" +
"All files (*.*)|*.*";
ofd.FilterIndex = 1; // 1 based index
if (ofd.ShowDialog() == DialogResult.OK)
{
try
{
StreamReader reader = new StreamReader(ofd.FileName);
rtxt.Rtf = reader.ReadToEnd();
reader.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
}
private void mnuUndo_Click(object sender, EventArgs e)
{
if (rtxt.CanUndo == true)
{
rtxt.Undo();
rtxt.ClearUndo();
}
}
private void mnuCut_Click(object sender, EventArgs e)
{
if (rtxt.SelectedText != "")
rtxt.Cut();
}
private void mnuCopy_Click(object sender, EventArgs e)
{
if (rtxt.SelectionLength > 0)
rtxt.Copy();
}
private void mnuCopyRtf_Click(object sender, EventArgs e)
{
if (rtxt.SelectionLength > 0)
{
Clipboard.SetDataObject(rtxt.SelectedRtf);
}
}
private void mnuPaste_Click(object sender, EventArgs e)
{
if (Clipboard.GetDataObject().GetDataPresent(DataFormats.Text) == true)
{
if (rtxt.CanUndo == true)
{
if (rtxt.SelectionLength > 0)
{
if (MessageBox.Show(
"Do you want to overwrite the currently selected text?",
"Cut & Paste", MessageBoxButtons.YesNo) == DialogResult.No)
rtxt.SelectionStart = rtxt.SelectionStart +
rtxt.SelectionLength;
}
rtxt.Paste();
}
}
}
private void mnuDelete_Click(object sender, EventArgs e)
{
if (rtxt.SelectionLength > 0)
rtxt.SelectedText = "";
}
private void mnuClear_Click(object sender, EventArgs e)
{
rtxt.Clear();
}
private void mnuSelect5_Click(object sender, EventArgs e)
{
if (rtxt.Text.Length >= 5)
{
rtxt.Select(0,5);
}
else
{
rtxt.Select(0,rtxt.Text.Length);
}
}
private void mnuSelectAll_Click(object sender, EventArgs e)
{
rtxt.SelectAll();
}
private void mnuScrollToCaret_Click(object sender, EventArgs e)
{
rtxt.ScrollToCaret();
}
private void mnuBullet_Click(object sender, EventArgs e)
{
rtxt.SelectionBullet = !rtxt.SelectionBullet;
}
private void mnuAlignLeft_Click(object sender, EventArgs e)
{
rtxt.SelectionAlignment = HorizontalAlignment.Left;
}
private void mnuAlignRight_Click(object sender, EventArgs e)
{
rtxt.SelectionAlignment = HorizontalAlignment.Right;
}
private void mnuAlignCenter_Click(object sender, EventArgs e)
{
rtxt.SelectionAlignment = HorizontalAlignment.Center;
}
private void mnuRed_Click(object sender, EventArgs e)
{
if (rtxt.SelectionColor == Color.Red)
rtxt.SelectionColor = Color.Black;
else
rtxt.SelectionColor = Color.Red;
}
private void mnuBold_Click(object sender, EventArgs e)
{
if (rtxt.SelectionFont.Bold )
rtxt.SelectionFont = new Font(rtxt.SelectionFont, FontStyle.Regular);
else
rtxt.SelectionFont = new Font(rtxt.SelectionFont, FontStyle.Bold);
}
private void mnuHang_Click(object sender, EventArgs e)
{
if (rtxt.SelectionHangingIndent == 10 )
rtxt.SelectionHangingIndent = 0;
else
rtxt.SelectionHangingIndent = 10;
}
private void mnuIndent_Click(object sender, EventArgs e)
{
if (rtxt.SelectionIndent == 10 )
rtxt.SelectionIndent = 0;
else
rtxt.SelectionIndent = 10;
}
private void mnuRightIndent_Click(object sender, EventArgs e)
{
if (rtxt.SelectionRightIndent == 50 )
rtxt.SelectionRightIndent = 0;
else
rtxt.SelectionRightIndent = 50;
}
}
</source>
