в 15:31, 26 мая 2010

2010-05-26T15:31:18Z

Admin: 1 версия

2010-05-26T11:33:47Z

1 версия

Новая страница

==Use TrackBar to control label color==

<source lang="csharp">
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class TrackForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TrackBar blueTrackBar;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TrackBar greenTrackBar;
private System.Windows.Forms.TrackBar redTrackBar;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.Label lblCurrColor;
private System.Windows.Forms.PictureBox colorBox;
public TrackForm()
{
InitializeComponent();
CenterToScreen();

redTrackBar.Value = 0;
greenTrackBar.Value = 0;
blueTrackBar.Value = 0;
UpdateColor();
}
private void InitializeComponent()
{
this.label4 = new System.Windows.Forms.Label ();
this.label1 = new System.Windows.Forms.Label ();
this.label3 = new System.Windows.Forms.Label ();
this.label2 = new System.Windows.Forms.Label ();
this.panel1 = new System.Windows.Forms.Panel ();
this.redTrackBar = new System.Windows.Forms.TrackBar ();
this.greenTrackBar = new System.Windows.Forms.TrackBar ();
this.colorBox = new System.Windows.Forms.PictureBox ();
this.lblCurrColor = new System.Windows.Forms.Label ();
this.blueTrackBar = new System.Windows.Forms.TrackBar ();
redTrackBar.BeginInit ();
greenTrackBar.BeginInit ();
blueTrackBar.BeginInit ();
label4.Location = new System.Drawing.Point (16, 88);
label4.Text = "Pick your slider here:";
label4.Size = new System.Drawing.Size (240, 32);
label4.Font = new System.Drawing.Font ("Microsoft Sans Serif", 15);
label4.TabIndex = 9;
label1.Location = new System.Drawing.Point (24, 16);
label1.Text = "Red:";
label1.Size = new System.Drawing.Size (88, 32);
label1.Font = new System.Drawing.Font ("Arial", 15);
label1.TabIndex = 4;
label3.Location = new System.Drawing.Point (24, 104);
label3.Text = "Blue:";
label3.Size = new System.Drawing.Size (88, 32);
label3.Font = new System.Drawing.Font ("Arial", 15);
label3.TabIndex = 6;
label2.Location = new System.Drawing.Point (24, 64);
label2.Text = "Green:";
label2.Size = new System.Drawing.Size (88, 32);
label2.Font = new System.Drawing.Font ("Arial", 15);
label2.TabIndex = 5;
panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
panel1.Location = new System.Drawing.Point (16, 120);
panel1.Size = new System.Drawing.Size (384, 188);
panel1.TabIndex = 8;
panel1.AutoScroll = true;
redTrackBar.TickFrequency = 5;
redTrackBar.Location = new System.Drawing.Point (120, 16);
redTrackBar.TabIndex = 2;
redTrackBar.TickStyle = System.Windows.Forms.TickStyle.TopLeft;
redTrackBar.Maximum = 255;
redTrackBar.Size = new System.Drawing.Size (232, 42);
redTrackBar.Scroll += new System.EventHandler (this.redTrackBar_Scroll);
greenTrackBar.TickFrequency = 5;
greenTrackBar.Location = new System.Drawing.Point (120, 56);
greenTrackBar.TabIndex = 3;
greenTrackBar.TickStyle = System.Windows.Forms.TickStyle.TopLeft;
greenTrackBar.Maximum = 255;
greenTrackBar.Size = new System.Drawing.Size (240, 42);
greenTrackBar.Scroll += new System.EventHandler (this.greenTrackBar_Scroll);
colorBox.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
colorBox.BackColor = System.Drawing.Color.Blue;
colorBox.Location = new System.Drawing.Point (16, 16);
colorBox.Size = new System.Drawing.Size (384, 56);
colorBox.TabIndex = 0;
colorBox.TabStop = false;
lblCurrColor.Location = new System.Drawing.Point (16, 324);
lblCurrColor.Text = "label4";
lblCurrColor.Size = new System.Drawing.Size (392, 40);
lblCurrColor.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
lblCurrColor.Font = new System.Drawing.Font ("Microsoft Sans Serif", 14);
lblCurrColor.TabIndex = 7;
blueTrackBar.TickFrequency = 5;
blueTrackBar.Location = new System.Drawing.Point (120, 96);
blueTrackBar.TabIndex = 1;
blueTrackBar.TickStyle = System.Windows.Forms.TickStyle.TopLeft;
blueTrackBar.Maximum = 255;
blueTrackBar.Size = new System.Drawing.Size (240, 42);
blueTrackBar.Scroll += new System.EventHandler (this.blueTrackBar_Scroll);
this.Text = "Color Form";
this.AutoScaleBaseSize = new System.Drawing.Size (5, 13);
this.ClientSize = new System.Drawing.Size (424, 385);
panel1.Controls.Add (this.label2);
panel1.Controls.Add (this.blueTrackBar);
panel1.Controls.Add (this.label3);
panel1.Controls.Add (this.greenTrackBar);
panel1.Controls.Add (this.redTrackBar);
panel1.Controls.Add (this.label1);
this.Controls.Add (this.label4);
this.Controls.Add (this.panel1);
this.Controls.Add (this.lblCurrColor);
this.Controls.Add (this.colorBox);
redTrackBar.EndInit ();
greenTrackBar.EndInit ();
blueTrackBar.EndInit ();
}
static void Main()
{
Application.Run(new TrackForm());
}
protected void greenTrackBar_Scroll (object sender, System.EventArgs e)
{
UpdateColor();
}
protected void redTrackBar_Scroll (object sender, System.EventArgs e)
{
UpdateColor();
}
protected void blueTrackBar_Scroll (object sender, System.EventArgs e)
{
UpdateColor();
}
private void UpdateColor()
{
Color c = Color.FromArgb(redTrackBar.Value, greenTrackBar.Value, blueTrackBar.Value);
colorBox.BackColor = c;
lblCurrColor.Text = "Current color is: " + "(" +
redTrackBar.Value + ", " +
greenTrackBar.Value + " ," +
blueTrackBar.Value + ")";
}
}

</source>

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Csharp/C Sharp/GUI Windows Form/Track Bar - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия