Thread: Drawing with buttons

Just remember to release it once you are done with it by calling ReleaseDC(). So in your case:

Code:

case WM_COMMAND:
{
    switch(LOWORD(wParam))
    {
        case IDC_BUTTON_IMAGE1:
        {
            hdc = GetDC(/*Handle to window in here*/) ; 
             for(j=0;j<256;j++)
            {
                for(k=0;k<256;k++)
                {
                    SetPixel(hdc,256+j,256+k,RGB(0,j,k));
                }
            }        
            Arc(hdc,200,200,300,300,100,100,200,200);
            ReleaseDC(/*Handle to window in here*/,hdc);
            break;
        }
    }
    break;