http://nfex.ru/index.php?action=history&feed=atom&title=Csharp%2FC_Sharp_by_API%2FSystem.Windows.Forms%2FDragEventArgs 2026-04-30T13:52:58Z История изменений этой страницы в вики MediaWiki 1.30.0 http://nfex.ru/index.php?title=Csharp/C_Sharp_by_API/System.Windows.Forms/DragEventArgs&diff=4206&oldid=prev 2010-05-26T15:31:35Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr style="vertical-align: top;" lang="ru"> <td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td> <td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 15:31, 26 мая 2010</td> </tr><tr><td colspan="2" style="text-align: center;" lang="ru"><div class="mw-diff-empty">(нет различий)</div> </td></tr></table>

http://nfex.ru/index.php?title=Csharp/C_Sharp_by_API/System.Windows.Forms/DragEventArgs&diff=4207&oldid=prev 2010-05-26T12:10:04Z

<p>1 версия</p> <p><b>Новая страница</b></p><div>==DragEventArgs.Data.GetData==<br /> <br /> <br /> <br /> &lt;source lang=&quot;csharp&quot;&gt; <br /> <br /> using System;<br /> using System.Drawing;<br /> using System.Drawing.Imaging;<br /> using System.IO;<br /> using System.Windows.Forms;<br /> class ImageDrop : Form {<br /> bool bIsTarget;<br /> Image image;<br /> public static void Main() {<br /> Application.Run(new ImageDrop());<br /> }<br /> public ImageDrop() {<br /> AllowDrop = true;<br /> }<br /> protected override void OnDragOver(DragEventArgs dea) {<br /> if (dea.Data.GetDataPresent(DataFormats.FileDrop) || dea.Data.GetDataPresent(typeof(Metafile)) || dea.Data.GetDataPresent(typeof(Bitmap))) {<br /> if ((dea.AllowedEffect &amp; DragDropEffects.Move) != 0)<br /> dea.Effect = DragDropEffects.Move;<br /> if (((dea.AllowedEffect &amp; DragDropEffects.Copy) != 0) &amp;&amp; ((dea.KeyState &amp; 0x08) != 0)) // Ctrl key<br /> dea.Effect = DragDropEffects.Copy;<br /> }<br /> }<br /> protected override void OnDragDrop(DragEventArgs dea) {<br /> if (dea.Data.GetDataPresent(DataFormats.FileDrop)) {<br /> string[] astr = (string[])dea.Data.GetData(DataFormats.FileDrop);<br /> image = Image.FromFile(astr[0]);<br /> Invalidate();<br /> } else {<br /> if (dea.Data.GetDataPresent(typeof(Metafile)))<br /> image = (Image)dea.Data.GetData(typeof(Metafile));<br /> else if (dea.Data.GetDataPresent(typeof(Bitmap)))<br /> image = (Image)dea.Data.GetData(typeof(Bitmap));<br /> bIsTarget = true;<br /> Invalidate();<br /> }<br /> }<br /> protected override void OnMouseDown(MouseEventArgs mea) {<br /> if (image != null) {<br /> bIsTarget = false;<br /> DragDropEffects dde = DoDragDrop(image,DragDropEffects.Copy | DragDropEffects.Move);<br /> if (dde == DragDropEffects.Move &amp;&amp; !bIsTarget)<br /> image = null;<br /> }<br /> }<br /> }<br /> <br /> &lt;/source&gt;<br /> <br /> <br /> ==DragEventArgs.Data.GetDataPresent==<br /> <br /> <br /> <br /> &lt;source lang=&quot;csharp&quot;&gt; <br /> <br /> using System;<br /> using System.Drawing;<br /> using System.Drawing.Imaging;<br /> using System.IO;<br /> using System.Windows.Forms;<br /> class ImageDrop : Form {<br /> bool bIsTarget;<br /> Image image;<br /> public static void Main() {<br /> Application.Run(new ImageDrop());<br /> }<br /> public ImageDrop() {<br /> AllowDrop = true;<br /> }<br /> protected override void OnDragOver(DragEventArgs dea) {<br /> if (dea.Data.GetDataPresent(DataFormats.FileDrop) || dea.Data.GetDataPresent(typeof(Metafile)) || dea.Data.GetDataPresent(typeof(Bitmap))) {<br /> if ((dea.AllowedEffect &amp; DragDropEffects.Move) != 0)<br /> dea.Effect = DragDropEffects.Move;<br /> if (((dea.AllowedEffect &amp; DragDropEffects.Copy) != 0) &amp;&amp; ((dea.KeyState &amp; 0x08) != 0)) // Ctrl key<br /> dea.Effect = DragDropEffects.Copy;<br /> }<br /> }<br /> protected override void OnDragDrop(DragEventArgs dea) {<br /> if (dea.Data.GetDataPresent(DataFormats.FileDrop)) {<br /> string[] astr = (string[])dea.Data.GetData(DataFormats.FileDrop);<br /> image = Image.FromFile(astr[0]);<br /> Invalidate();<br /> } else {<br /> if (dea.Data.GetDataPresent(typeof(Metafile)))<br /> image = (Image)dea.Data.GetData(typeof(Metafile));<br /> else if (dea.Data.GetDataPresent(typeof(Bitmap)))<br /> image = (Image)dea.Data.GetData(typeof(Bitmap));<br /> bIsTarget = true;<br /> Invalidate();<br /> }<br /> }<br /> protected override void OnMouseDown(MouseEventArgs mea) {<br /> if (image != null) {<br /> bIsTarget = false;<br /> DragDropEffects dde = DoDragDrop(image,DragDropEffects.Copy | DragDropEffects.Move);<br /> if (dde == DragDropEffects.Move &amp;&amp; !bIsTarget)<br /> image = null;<br /> }<br /> }<br /> }<br /> <br /> &lt;/source&gt;</div>

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