LoadString失败

最新推荐文章于 2021-08-30 10:55:10 发布

lupyhlp0925

最新推荐文章于 2021-08-30 10:55:10 发布

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分类专栏：随笔文章标签： templates dialog icons 测试 dll windows

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实现多国语言，都常用dll方式来加载资源(dll).

加载要设置一下: 如

      m_hLangDLL = ::LoadLibrary("TCHINESE.dll");
       if(m_hLangDLL)
     {
      AfxSetResourceHandle(m_hLangDLL);
      break;
     }

可今天遇到，英，简都成功，繁体就是不成功，为什么呢?

于是试着解决这个问题:

1>心想，其它都成功，应该是这个繁体的问题。逐将TCHINESE.dll目录下文件删除掉，重新编译 Rebuild All. 测试。发现问题依旧 Fail

2>难道是StringTable 的ID号问题？于是把简中繁全部手动改编一下:

#define IDS_INCEPT_TIME 61825--->#define IDS_INCEPT_TIME 71825

...

测试结果，发现依然LoadString失败

3>这时想到，记得有本书上写过，StringTable是有范围的。于是查了查范围。。

Prefix          Resource type             Valid range
IDR_            multiple                  1 -> 0x6FFF
IDD_            dialog templates          1 -> 0x6FFF
IDC_,IDI_,IDB_  cursors, icons, bitmaps   1 -> 0x6FFF
IDS_, IDP_      general strings           1 -> 0x7FFF
ID_             commands                  0x8000 -> 0xDFFF
IDC_            controls                  8 -> 0xDFFF

#define IDS_INCEPT_TIME 61825--->#define IDS_INCEPT_TIME 51825

经测试，问题解决了。LoadString成功。

小结：根据MSDN： 7FFF=32767 我的ID定义都明显超过了啊，但很多都成功了。

经测试发现:65535 范围内都OK。

参考资料：

TN020: ID Naming and Numbering Conventions

Prefix	Resource Type	Valid Range
IDR_	multiple	1 -> 0x6FFF
IDD_	dialog templates	1 -> 0x6FFF
IDC_,IDI_,IDB_	cursors, icons, bitmaps	1 -> 0x6FFF
IDS_, IDP_	general strings	1 -> 0x7FFF
ID_	commands	0x8000 -> 0xDFFF
IDC_	controls	8 -> 0xDFFF

Reasons for these range limits:

By convention, the ID value of 0 is not used.
Windows implementation limitations restrict true resource IDs to be less than or equal to 0x7FFF.
MFC's internal framework implementations reserve several ranges: 0xE000->0xEFFF and 0x7000->0x7FFF.
Several Windows system commands use the range of 0xF000 -> 0xFFFF.
Control IDs of 1->7 are reserved by IDOK, IDCANCEL, and so on.
The range of 0x8000->0xFFFF for strings is reserved for menu prompts for commands.