switch(id)
{
case IDC_BTN1:
{
SetTimer(hwnd,1,100,keybd);
}break;
default:break;
}
回調函數是
VOID CALLBACK keybd(HWND hwnd,UINT iTimerID,UINT message,DWORD dwtime)
{
keybd_event( VK_CONTROL, MapVirtualKey(VK_CONTROL,0) , 0 , 0);
Sleep(300);
keybd_event( VK_CONTROL , MapVirtualKey(VK_CONTROL,0) , KEYEVENTF_KEYUP , 0);
}