MAKEINTRESOURCE() gdi+ 出错,返回空

[eatman]

在VC8中,我用了:

USES_CONVERSION;
Bitmap * m_bmpSurface = Bitmap::FromResource( AfxGetApp()->m_hInstance, A2W((LPCSTR)MAKEINTRESOURCE(IDB_BITMAP1)));
//???????????
if(!m_bmpSurface) {
AfxMessageBox(_T("fail to load bitmap"));
return;
}
跟踪程序后;

程序进入到函数:
inline LPWSTR WINAPI AtlA2WHelper(__out_ecount(nChars) LPWSTR lpw, __in LPCSTR lpa, __in int nChars, __in UINT acp) throw()
{
ATLASSERT(lpa != NULL);
ATLASSERT(lpw != NULL);
if (lpw == NULL || lpa == NULL)
return NULL;
// verify that no illegal character present
// since lpw was allocated based on the size of lpa
// don't worry about the number of chars
lpw[0] = '\0';
??????????int ret = MultiByteToWideChar(acp, 0, lpa, -1, lpw, nChars);
if(ret == 0)
{
ATLASSERT(FALSE);
return NULL;
}
return lpw;
}
其中:lpa为空,从而产生错误
请教,怎么解决; 谢谢

[eatman]

感谢zhejiang9(Why not?) 的回答,实际上已经通过资源管理器,导入了一个图片了,IDB_BITMAP1

[拿节]

。。。。。。。
那就奇怪了
VC8中MAKEINTRESOURCE返回LPTSTR，所以无须转换！
Bitmap *m_bmpSurface = Bitmap::FromResource( AfxGetApp()->m_hInstance, MAKEINTRESOURCE(IDB_BITMAP1));

[eatman]

是的,可以不用转换的,但是结果是一样的

[eatman]

请问一下:
Bitmap *m_bmpSurface = Bitmap::FromResource( AfxGetApp()->m_hInstance, MAKEINTRESOURCE(IDB_BITMAP1));
MSDN中有:
Remarks
This method works only with bitmaps that are named resources in a DLL.

有人在VC8 中存取过自己的资源的吗,上面的REMARKS 是什么意思

[拿节]

哦！
这个备注是说！
这个函数只能使用动态连接库中的位图资源！

[eatman]

又用了
Bitmap *m_bmpSurface = Bitmap::FromResource( AfxGetApp()->m_hInstance, (WCHAR *)(LPCTSTR)MAKEINTRESOURCE(IDB_BITMAP1));

m_bmpSurface 是空的,好象就是找不到这个资源:IDB_BITMAP1

谁帮忙解答一下,不胜感激

[拿节]

那就是你没有这个资源啦。。。。