- int ret = m_pddsFrontBuffer->Blt(&FrameRectMy, m_pddsBackBuffer, &EmuScreenRect, DDBLT_WAIT, NULL);\r
+ int ret = 0;\r
+ if (FrameRectMy.right - FrameRectMy.left > 0 && FrameRectMy.bottom - FrameRectMy.top > 0)\r
+ ret = m_pddsFrontBuffer->Blt(&FrameRectMy, m_pddsBackBuffer, &EmuScreenRect, DDBLT_WAIT, NULL);\r