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- FROM: Keith Funk (CIS 72240,2020)
- TO: All
- SUBJECT: DragDrop Demo Program.
- DATE: July, 1991
-
- Hi,
-
- The enclosed code is a sample VB program that demonstrates how to use a
- Picture Control to implement what appears to be a 'drag' operation on
- a Text Control. Code of this type is required because a Text Control
- cannot be dragged directly. A Text Control doesn't have a MouseDown
- Event which can be used to detect when a user wants to drag the
- control.
-
- In addition, I've added some code that prevents a dragged control from
- being dropped if it overlaps another control on the form. This code works
- well if there is a limited number of controls on the form, but probably
- would really 'bog down' on a form with many controls.
-
- The program is purely a demonstration of programming methods and serves no
- other useful purpose. It is intended for novice VB users like myself.
-
- I'd really appreciated comments and criticism of all aspects of the program
- including source code documentation, coding style, algorithms and general
- program methodology.
-
- The best way to read the program code is to select the code form and then
- select (general) from the Control's combo box. Then use CTRL-DownArrow
- to move from one Procedure to another.
-
- Good luck.