关于得到bitmap的高和宽!

[fantasychina]

我用
HBITMAP hBitmap=(HBITMAP)::LoadImage(NULL,"map.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE)
加载位图,怎样得到位图的宽和高呢?我用GetBitmapDimentionEx()得到的是0,0 .我想知道还有其他的方法得到高和宽?不用MFC及其其他类库,只通过win32 API途径.谢谢!

[city_freeman]

CBitmap bitmapSpan;
BITMAP szBitMap;

bitmapSpan.LoadBitmap(IDB_COLUMNHEADER_SPAN);
bitmapSpan.GetObject(sizeof(BITMAP),&szBitMap);
CSize size(szBitMap.bmWidth,szBitMap.bmHeight);

[sycnick]

CBitmap::GetBitmapDimension

Returns the width and height of the bitmap.

CSize GetBitmapDimension( ) const;

Return Value
The width and height of the bitmap, measured in 0.1-millimeter units. The height is in the cy member of the CSize object, and the width is in the cx member. If the bitmap width and height have not been set by using SetBitmapDimension, the return value is 0.

Remarks
The height and width are assumed to have been set previously by using the SetBitmapDimension member function.

[菜牛]

从文件中直接读取位图信息就可以了。
ReadFile
BITMAPINFO

[yanghy2013]

CBitmap bitmapSpan;
BITMAP BitMapInf;

bitmapSpan.LoadBitmap(IDB_COLUMNHEADER_SPAN);
bitmapSpan.GetObject(sizeof(BitMapInf),&BitMapInf);
其中BitMapInf.bmWidth,BitMapInf.bmHeight就是这图片的宽和高