<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=gb2312"> <META content="MSHTML 6.00.2800.1561" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2>Hi all, </FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>I'm newbie, I try to show bitmap(1bpp~24bpp) using cairo_image_surface_create_for_data(), but find out the speed is unbearable.</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Code goes like this:<BR>...<BR>cairo_t *pMemCR = pGraphics->GetCR();<BR>DFE_ASSERT(pMemCR != DFE_Null);<BR>cairo_move_to(pMemCR, dDstX, dDstY);</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>cairo_surface_t *image = cairo_image_surface_create_for_data((unsigned char*)pData, CAIRO_FORMAT_A1, pInfo->bmiHeader.biWidth, pInfo->bmiHeader.biHeight, 0);<BR>cairo_set_source_surface(pMemCR, image, dDstX, dDstY);<BR>cairo_paint(pMemCR);<BR>cairo_surface_destroy(image);<BR>...</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Is this the correct method to show bitmap? Or there is better way to do it(manipulate pData directly...)?<BR>Hope someone would shed light on this. Thanks!</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>stephen</FONT></DIV> <DIV><FONT size=2></FONT> </DIV></BODY></HTML>