Hello,

"I have only one doubt:
...
and send VK_ALT as the first parameter, the class is understanding that "CTRL" was sent instead of "ALT" key..."

yes, for some reason I didn't remember I've used the VFP constants for (like in Keypress event) the Alt-Ctlr-Shift modifiers instead of the VK_.. defines from the winapi.

Regards
Christian