Draw into other windows

Question

hi i want to draw into other windows (with help of gdi+ or mdx). i managed to draw into other winforms but my goal is to draw into a window that belongs to a game (dx). how can i draw into the game's window (without flickering)? or is there any possibility that i lay a drawing over the game's window? thx

Mykonine · Answer

DirectX operates at the hardware level so you can't draw using GDI+ on a game's window. You can however draw onto a bitmap and then blit the bitmap onto the screen by pasting it on a screen-sized polygon (D3D) as a texture or blitting it as a surface (DD) whichever you are using.