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Language: C
Expertise: Intermediate

Dec 29, 2003

Have you ever wanted to draw or write something on top of another window using GDI? It can be done by obtainig a DC to the desktop window and then using normal drawing functions on it. For example:

HDC hDC;

hDC = CreateDC("DISPLAY", NULL, NULL, NULL);
if (hDC) {
    TextOut(hDC, 0, 0, "Hello world!", 12);
    DeleteDC(hDC);
}

This will write 'Hello world!' in the upper left corner of your screen.