wince(2) 位图的使用
回忆位图画刷的使用步骤:
````````` PAINTSTRUCT ps; RECT rect; GetClientRect(hwnd,&rect); HDC hdc = BeginPaint(hwnd,&ps); HBitMap hmp = LoadBitMap(g_hInst,MAKEINTRESOURCE(IDB_BITMAP1)); BRUSH brush = CreatePatternBrush(hmp); HGDIOBJ oldbrush = SelectObject(hdc,brush);// save Ellipse(hdc,10,10,200,200); SelectObject(hdc,oldbrush); DeleteObject(hmp);//clear the rc used DeleteObject(brush);//clear DC EndPaint(hwnd,&ps);
位图使用操作的步骤:
1.创建位图句柄;
2.加载位图对象(3种方法,LoadBitMap,设备相关CreateBitMap,设备无关SHLoadDIBitmap);
3.创建“内存设备环境”(memory device context,使用CreateCompatibleDC),
选入设备对象是SelectObject,不必要保存的,
HGIDOBJ holdmem = SelectObject(hmem,hbitmap)将位图选入设备环境··(3种方法,BitBlt,StretchBlt,TransparentBlt==TransparentImage)
4.使用绘图函数进行图形的绘制
5.删除位图句柄
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
HBITMAP CopyBitmap( HBITMAP hbm) { HDC hdcSrc = CreateCompatibleDC(NULL); HDC hdcDst = CreateCompatibleDC(NULL); HBITMAP hbmOld, hbmOld2, hbmNew; BITMAP bm; GetObject(hbm, sizeof(bm), &bm); hbmOld = SelectObject(hdcSrc, hbm); hbmNew = CreateBitmap( bm.bmWidth, bm.bmHeight, bm.bmPlanes, bm.bmBitsPixel, NULL); hbmOld2 = SelectObject(hdcDst, hbmNew); BitBlt(hdcDst, 0, 0, bm.bmWidth, bm.bmHeight, hdcSrc, 0, 0, SRCCOPY); SelectObject(hdcSrc, hbmOld); DeleteDC(hdcSrc); DeleteDC(hdcDst); return hbmNew; }
posted on 2013-03-08 22:02 イケメンおっさん_汪汪 阅读(203) 评论(0) 编辑 收藏 举报