Advance Topics in Windows

Drag-and-drop functionality is ubiquitous in Windows Forms programming. It refers to allowing the user to grab data such as text, an image, or another object with the mouse and drag it to another control. When the mouse button is released over the other control, the data that is being dragged is dropped onto the control and a variety of effects can then occur. Dragging and dropping is similar to cutting and pasting. The mouse pointer is positioned over a control and the mouse button is pressed. Data is copied from a source control; when the mouse button is released, the drop action is completed. All code for copying the data from the source control and any actions taken on the target control must be explicitly coded. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .