>>791 のバイナリ部分も一応書いとくね

#include <windows.h>
#include <shellapi.h>
void WINAPI WinMainCRTStartup()
{
APPBARDATA abData;
abData.cbSize = sizeof(APPBARDATA);
abData.hWnd = NULL;
if (SHAppBarMessage(ABM_GETSTATE, &abData) & ABS_AUTOHIDE) {
abData.lParam = ABS_ALWAYSONTOP;
} else {
abData.lParam = ABS_AUTOHIDE | ABS_ALWAYSONTOP;
}
SHAppBarMessage(ABM_SETSTATE, &abData);
ExitProcess(0);
}