Force Desktop Window To Refresh

[balak yap]

Well, during my program running, i paint something on the desktop window,
after that, i want the desktop window to "refresh" to clear all what i paint.
I try WM_PAINT but it didn't work, any suggestion?
Thanks

Hello World!!!

[Dan Haddix]

Try WM_ERASEBKGND

[sally]

Try calling Invalidate() for the Desktop Window

Sally

[Sally]

Try calling Invalidate() for the Desktop Window

Sally