在EXE和DLL中，FindResource的区别

待我称王封你为后i 2023-10-12 02:28 22阅读 0赞

转载:https://blog.csdn.net/ithzhang/article/details/7995102

以下的代码在EXE中，执行无误。可是在DLL中FindResource返回的值就为0了，我用::GetLastError()，得出的值是1813，也就是取不到资源，这是为什么？

1.   
    
    BOOL ExtractFile(char \*szZlibFile,DWORD dwRID)
2.   
    
    \{
3.   
    
    HANDLE hFile = NULL ;
4.   
    
    HRSRC hRsrc = NULL ;
5.   
    
    HGLOBAL hGlobal = NULL ;
6.   
    
     
7.   
    
    DWORD dwResSize = 0, dwBytesWrite = 0, dwBytesRead = 0;
8.   
    
    PVOID pRsrc = NULL, pConfigEncrypt = NULL;
9.   
    
    hRsrc = FindResource( NULL, MAKEINTRESOURCE(dwRID), "ZLIB");
10.  
    
    if(hRsrc == NULL)
11.  
    
    \{
12.  
    
    MyDbgPrint( "\[ExtractFile\] Locate Resource Error: %d\\n", GetLastError());
13.  
    
    return FALSE;
14.  
    
    \}
15.  
    
     
16.  
    
    dwResSize = SizeofResource( NULL, hRsrc);
17.  
    
     
18.  
    
    hGlobal = LoadResource( NULL, hRsrc);
19.  
    
    if(hGlobal == NULL)
20.  
    
    \{
21.  
    
    MyDbgPrint( "\[ExtractFile\] Load Resource Error: %d\\n", GetLastError());
22.  
    
    return FALSE;
23.  
    
    \}
24.  
    
     
25.  
    
    pRsrc = LockResource(hGlobal);
26.  
    
     
27.  
    
    hFile = CreateFile( szZlibFile , GENERIC\_ALL, 0, NULL, CREATE\_ALWAYS, FILE\_ATTRIBUTE\_NORMAL, NULL);
28.  
    
    if(hFile == INVALID\_HANDLE\_VALUE)
29.  
    
    \{
30.  
    
    MyDbgPrint( "\[ExtractFile\] Create %s File Error: %d\\n", szZlibFile , GetLastError());
31.  
    
    return FALSE;
32.  
    
    \}
33.  
    
     
34.  
    
    if( WriteFile( hFile, pRsrc, dwResSize, &dwBytesWrite, NULL) == FALSE)
35.  
    
    \{
36.  
    
    MyDbgPrint( "\[ExtractFile\] Write %s File Error: %d\\n", szZlibFile , GetLastError());
37.  
    
    return FALSE;
38.  
    
    \}
39.  
    
    CloseHandle(hFile);
40.  
    
    MyDbgPrint( "\[ExtractFile\] Write %s File Success\\n",szZlibFile);
41.  
    
    return TRUE;
42.  
    
     
43.  
    
    \}

问题出在FindResource的第一个参数取得的HINSTANCE句柄是EXE的HINSTANCE句柄，自然在其中也找不到在DLL中引入的ZLIB这个位图ID了.同时SizeofResource,LoadResource中的第一个参数也应该是DLL的句柄.

解决方法如下:

1.   
    
    BOOL ExtractFile(char \*szZlibFile,DWORD dwRID)
2.   
    
     
3.   
    
    \{
4.   
    
     
5.   
    
    HANDLE hFile = NULL ;
6.   
    
     
7.   
    
    HRSRC hRsrc = NULL ;
8.   
    
     
9.   
    
    HGLOBAL hGlobal = NULL ;
10.  
    
     
11.  
    
    DWORD dwResSize = 0, dwBytesWrite = 0, dwBytesRead = 0;
12.  
    
     
13.  
    
    PVOID pRsrc = NULL, pConfigEncrypt = NULL;
14.  
    
     
15.  
    
    HINSTANCE hInst = GetModuleHandle( dll的路径 );
16.  
    
     
17.  
    
    hRsrc = FindResource( hInst , MAKEINTRESOURCE(dwRID), (LPCTSTR) "ZLIB");
18.  
    
     
19.  
    
    if(hRsrc == NULL)
20.  
    
     
21.  
    
    \{
22.  
    
     
23.  
    
    return FALSE;
24.  
    
     
25.  
    
    \}
26.  
    
     
27.  
    
    dwResSize = SizeofResource( hInst , hRsrc);
28.  
    
     
29.  
    
    hGlobal = LoadResource( hInst , hRsrc);
30.  
    
     
31.  
    
    if(hGlobal == NULL)
32.  
    
     
33.  
    
    \{
34.  
    
     
35.  
    
    return FALSE;
36.  
    
     
37.  
    
    \}
38.  
    
     
39.  
    
    pRsrc = LockResource(hGlobal);
40.  
    
     
41.  
    
    hFile = CreateFile( szZlibFile , GENERIC\_ALL, 0, NULL, CREATE\_ALWAYS, FILE\_ATTRIBUTE\_NORMAL, NULL);
42.  
    
     
43.  
    
    if(hFile == INVALID\_HANDLE\_VALUE)
44.  
    
     
45.  
    
    \{
46.  
    
     
47.  
    
    return FALSE;
48.  
    
     
49.  
    
    \}
50.  
    
     
51.  
    
    if( WriteFile( hFile, pRsrc, dwResSize, &dwBytesWrite, NULL) == FALSE)
52.  
    
     
53.  
    
    \{
54.  
    
     
55.  
    
    return FALSE;
56.  
    
     
57.  
    
    \}
58.  
    
     
59.  
    
    CloseHandle(hFile);
60.  
    
     
61.  
    
    return TRUE;
62.  
    
     
63.  
    
    \}

转载于:https://www.cnblogs.com/kuangke/p/10901497.html