Hiya :), first of all : I already searched the forum, but didn't find a solution to my problem : I'm using DirectGraphics with sprites to make a pong clone. I'm running my application in a window. When I alt-tab in and out of my application the inside of my window is gray and stays that way until I press alt-F4. I checked if I have a lost my devices this way :

rslt=g_pDevice->TestCooperativeLevel() ;

if (FAILED(rslt))
{
	if (rslt == D3DERR_DEVICENOTRESET)
        {
                restore my DX-stuff

But it seems that I do not lose my devices, so my DX-stuff isn't getting restored. Maybe some1 else have an idea why my screen is gray? thanx in advance for any response... edit : testcooperativelevel() returns S_OK!

nobody? :(

It could have something to do with what is in your WM_PAINT message handler.

Hope this helps,

Silent Dragon