Неверное маштабирование окна

// для Windows Vista или выше
#define LOGPIXELSY 90
external(INT, "SetProcessDPIAware", "SetProcessDPIAware", "User32.dll");
external(INT, "GetDeviceCaps", "GetDeviceCaps", "Gdi32.dll");
external(INT, "ReleaseDC", "ReleaseDC", "User32.dll");
external(INT, "GetDC", "GetDC", "User32.dll");
SetProcessDPIAware();

int HDC = GetDC(0);
messagebox(GetDeviceCaps (HDC, LOGPIXELSY) / 0.96);
ReleaseDC(0, HDC);

external(INT, "IsUserAnAdmin", "IsUserAnAdmin", "Shell32.dll");

if(IsUserAnAdmin()==0)
{
messagebox("Программа запущена не от админа");
close();
}

createdialog(0);
showdialog(0, "Диалог", 300, 300, 300, 300, 4, 1);
loop()sleep(10);

function getmessage(0, WM_CLOSE)
{
close();
}