混用Int与IntPtr致使GetProcAddress始终返回null

 

注意NET某些类型在不一样平台上的长度

NET中用句柄用得最多的是在DLLIMPORT中，混用int与intptr可能会致使某些API声明在X64平台中表现不正常，如

[DllImport("Kernel32")]

public static extern IntPtr LoadLibrary(string funcname);

[DllImport("Kernel32")]

public static extern long GetProcAddress(long handle, string funcname);

 

 int _tmain(int argc, _TCHAR* argv[])    {        int i = 0;        i = sizeof(int);                // x86:4        x64:4        i = sizeof(long);           // x86:4        x64:4        i = sizeof(void*);          // x86:4        x64:8        i = sizeof(short);          // x86:2        x64:2        i = sizeof(float);          // x86:4        x64:4        i = sizeof(double);         // x86:8        x64:8        i = sizeof(int*);           // x86:4        x64:8        i = sizeof(WORD);           // x86:2        x64:2        i = sizeof(DWORD);          // x86:4        x64:4        i = sizeof(LONGLONG);       // x86:8        x64:8        i = sizeof(HANDLE);         // x86:4        x64:8        i = sizeof(HWND);           // x86:4        x64:8        i = sizeof(bool);           // x86:1        x64:1        i = sizeof(char);           // x86:1        x64:1                return 0;    }

 

 

 

参考：http://blog.csdn.net/road2010/article/details/21406639