MFC256色位图转换成单色位图代码
时间: 2023-05-29 11:06:56 浏览: 61
以下是将MFC 256色位图转换为单色位图的代码示例:
```cpp
CBitmap bmpSrc;
bmpSrc.LoadBitmap(IDB_256COLOR_BITMAP); // 从资源中加载256色位图
CBitmap bmpDst;
bmpDst.CreateBitmap(bmpSrc.GetBitmapDimension().cx, bmpSrc.GetBitmapDimension().cy, 1, 1, NULL); // 创建单色位图
CDC dcSrc, dcDst;
dcSrc.CreateCompatibleDC(NULL);
dcDst.CreateCompatibleDC(NULL);
CBitmap* pOldSrcBmp = dcSrc.SelectObject(&bmpSrc);
CBitmap* pOldDstBmp = dcDst.SelectObject(&bmpDst);
BITMAPINFO bmpInfo = {0};
bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmpInfo.bmiHeader.biWidth = bmpSrc.GetBitmapDimension().cx;
bmpInfo.bmiHeader.biHeight = bmpSrc.GetBitmapDimension().cy;
bmpInfo.bmiHeader.biPlanes = 1;
bmpInfo.bmiHeader.biBitCount = 8;
bmpInfo.bmiHeader.biCompression = BI_RGB;
BYTE* pSrcBits = new BYTE[bmpSrc.GetBitmapDimension().cy * bmpSrc.GetBitmapDimension().cx];
BYTE* pDstBits = new BYTE[bmpDst.GetBitmapDimension().cy * bmpDst.GetBitmapDimension().cx / 8];
dcSrc.GetDIBits(dcSrc.GetSafeHdc(), (HBITMAP)bmpSrc, 0, bmpSrc.GetBitmapDimension().cy, pSrcBits, &bmpInfo, DIB_RGB_COLORS);
for (int y = 0; y < bmpSrc.GetBitmapDimension().cy; y++)
{
for (int x = 0; x < bmpSrc.GetBitmapDimension().cx; x++)
{
BYTE pixel = pSrcBits[y * bmpSrc.GetBitmapDimension().cx + x];
BYTE* pDstPixel = pDstBits + (y * bmpDst.GetBitmapDimension().cx + x) / 8;
*pDstPixel |= (pixel != 0) << (7 - (x % 8));
}
}
dcDst.SetDIBits(dcDst.GetSafeHdc(), (HBITMAP)bmpDst, 0, bmpDst.GetBitmapDimension().cy, pDstBits, &bmpInfo, DIB_RGB_COLORS);
dcSrc.SelectObject(pOldSrcBmp);
dcDst.SelectObject(pOldDstBmp);
delete[] pSrcBits;
delete[] pDstBits;
bmpSrc.DeleteObject(); // 释放原256色位图资源
```
注:上述代码仅提供参考,实际应用时需根据具体情况进行修改和优化。
相关推荐
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![application/x-rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![doc](https://img-home.csdnimg.cn/images/20210720083327.png)
![7z](https://img-home.csdnimg.cn/images/20210720083312.png)