#DEFINE WM_KEYUP 0x101
#DEFINE VK_DOWN 0x28
#DEFINE WM_QUIT 0x12
#DEFINE WM_CLOSE 0x10
#DEFINE WM_KEYDOWN 0x100

I have see this conde in some api samples.
There are many other wm_??? commands.
Maybe wm_command.

Where to know ohter wm_??? commands response in vfp.

Thanks.
Cemal