how implement display of fullscreen on QVGA windows mobile when using GAPI

转载于 2019-07-23 20:17:48 发布 · 50 阅读

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原文链接：http://www.cnblogs.com/JLMobile/archive/2006/04/17/377422.html

本文介绍了一种使用ExtEscape函数替代GXBeginDraw()函数的方法来获取绘图缓冲区。通过具体代码示例展示了如何利用ExtEscape函数获取RawFrameBufferInfo结构数据，并通过其成员pFramePointer获取绘图缓冲区指针。

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you can use the following codes instead of GXBeginDraw():

RawFrameBufferInfo rfbi;

int hr = ExtEscape(hdc, GETRAWFRAMEBUFFER, 0, NULL, sizeof(RawFrameBufferInfo), (char *)fbi);

g_pPaintBuffer = (BYTE*)rfbi.pFramePointer;

don't use GXBeginDraw() function to get drawing buffer. you should use ExtEscape function to get strcut data, and pFramePointer point is that you want to get drawing buffer point.
when you are ready to draw, you are careful to display Properties struct data. Because they are not fitful for the buffer point which you get through ExtEscape function, you should use data get by ExtEscape function.

Be careful for data, maybe changed:
g_gxdp.cBPP     , rfbi.wBPP;
g_gxdp.cbxPitch      , rfbi.cxStride;
g_gxdp.cbyPitch      ,   rfbi.cyStride;
g_gxdp.cxWidth      , rfbi.cxPixels;
g_gxdp.cyHeight      , rfbi.cyPixels;
g_gxdp.ffFormat      ,   rfbi.wFormat;

转载于:https://www.cnblogs.com/JLMobile/archive/2006/04/17/377422.html