|
|
发表于 2007-11-19 13:41:00
|
显示全部楼层
Re:DXUTFindDXSDKMediaFileCch的问题
//--------------------------------------------------------------------------------------
// Tries to find the location of a SDK media file
// cchDest is the size in WCHARs of strDestPath. Be careful not to
// pass in sizeof(strDest) on UNICODE builds.
//
// 试图找到资源的路径，cchDest是sizeof(strPath) / sizeof(WCHAR),注意UNICODE字符的区别
//--------------------------------------------------------------------------------------
HRESULT DXUTFindDXSDKMediaFileCch( WCHAR* strDestPath, int cchDest, LPCWSTR strFilename )
{
bool bFound;
WCHAR strSearchFor[MAX_PATH];
if( NULL==strFilename || strFilename[0] == 0 || NULL==strDestPath || cchDest < 10 )
return E_INVALIDARG;
// Get the exe name, and exe path得到执行文件的路径和名字
WCHAR strExePath[MAX_PATH] = {0};
WCHAR strExeName[MAX_PATH] = {0};
WCHAR* strLastSlash = NULL;
GetModuleFileName( NULL, strExePath, MAX_PATH );// 得到模块的完全路径
strExePath[MAX_PATH-1]=0;
strLastSlash = wcsrchr( strExePath, TEXT('\\') );//从尾部开始查找子字符串出现的第一个位置
if( strLastSlash )
{
StringCchCopy( strExeName, MAX_PATH, &strLastSlash[1] );//拷贝字符串
// Chop the exe name from the exe path//从完整的路径中去调执行程序的名字例如ABC.exe
*strLastSlash = 0;
// Chop the .exe from the exe name//在执行程序的名字中去掉.exe变成ABC了
strLastSlash = wcsrchr( strExeName, TEXT('.') );
if( strLastSlash )
*strLastSlash = 0;
}
// Typical directories:
// . // .. // ..\.. // %EXE_DIR% // %EXE_DIR%\.. // %EXE_DIR%\..\.. // %EXE_DIR%\..\%EXE_NAME%
// %EXE_DIR%\..\..\%EXE_NAME%
// Typical directory search惯用的查找路径方法
bFound = DXUTFindMediaSearchTypicalDirs( strDestPath, cchDest, strFilename, strExePath, strExeName );
if( bFound )
return S_OK;
// Typical directory search again, but also look in a subdir called "\media\" 在搜索一次，这次查找子目录
StringCchPrintf( strSearchFor, MAX_PATH, L"media\\%s", strFilename );
bFound = DXUTFindMediaSearchTypicalDirs( strDestPath, cchDest, strSearchFor, strExePath, strExeName );
if( bFound
return S_OK;
WCHAR strLeafName[MAX_PATH] = {0};
// Search all parent directories starting at .\ and using strFilename as the leaf name
StringCchCopy( strLeafName, MAX_PATH, strFilename );
bFound = DXUTFindMediaSearchParentDirs( strDestPath, cchDest, L".", strLeafName );
if( bFound )
return S_OK;
// Search all parent directories starting at the exe's dir and using strFilename as the leaf name
bFound = DXUTFindMediaSearchParentDirs( strDestPath, cchDest, strExePath, strLeafName );
if( bFound )
return S_OK;
// Search all parent directories starting at .\ and using "media\strFilename" as the leaf name
StringCchPrintf( strLeafName, MAX_PATH, L"media\\%s", strFilename );
bFound = DXUTFindMediaSearchParentDirs( strDestPath, cchDest, L".", strLeafName );
if( bFound )
return S_OK;
// Search all parent directories starting at the exe's dir and using "media\strFilename" as the leaf name
bFound = DXUTFindMediaSearchParentDirs( strDestPath, cchDest, strExePath, strLeafName );
if( bFound )
return S_OK;
// On failure, return the file as the path but also return an error code
StringCchCopy( strDestPath, cchDest, strFilename );
return DXUTERR_MEDIANOTFOUND;
} |
|
楼主