자바 JNA : GetProcAddress를이

Question

은 다음 코드는 발견하지

null를 돌려 GetProcAddress를이 다음과 같이 선언된다 LoadLibraryW

private static FOREIGN_THREAD_START_ROUTINE getLoadLibraryWAddress() throws Win32Exception { 
    HMODULE module = Kernel32.INSTANCE.GetModuleHandle("KERNEL32"); 
    if(module == null) { 
     Win32Exception.throwWithLastError("Failed to find KERNEL32 module"); 
    } 

    FOREIGN_THREAD_START_ROUTINE address = Kernel32MissingFunctions.INSTANCE.GetProcAddress(module, "LoadLibraryW"); 
    if(address == null) { 
     Win32Exception.throwWithLastError("Failed to find LoadLibraryW in KERNEL32 module"); 
    } 
    return address; 
} 

:

public interface Kernel32MissingFunctions extends StdCallLibrary { 

    Kernel32MissingFunctions INSTANCE = (Kernel32MissingFunctions) Native.loadLibrary("kernel32", 
      Kernel32MissingFunctions.class, W32APIOptions.UNICODE_OPTIONS); 

    public static final int MEM_RELEASE = 0x8000; 

    public LPVOID VirtualAllocEx(HANDLE hProcess, LPVOID lpAddress, long dwSize, int flAllocationType, int flProtect); 

    public int VirtualFreeEx(HANDLE hProcess, LPVOID lpAddress, long dwSize, int dwFreeType); 

    public FOREIGN_THREAD_START_ROUTINE GetProcAddress(HMODULE hModule, String lpProcName); 
} 

사람이 왜 알고 있나요? 내 실수는 무엇입니까? 감사합니다.

Answer 1

Martin Drab이 옳았습니다. W32APIOptions.UNICODE_OPTIONS를 사용하면 유니 코드 문자열이 Ansi 함수에 전달됩니다. 다음과 같이 인터페이스를 변경하면 문제가 해결됩니다.

public interface Kernel32MissingFunctions extends StdCallLibrary { 

    Kernel32MissingFunctions INSTANCE = (Kernel32MissingFunctions) Native.loadLibrary("kernel32", 
      Kernel32MissingFunctions.class, W32APIOptions.ASCII_OPTIONS); 

    public static final int MEM_RELEASE = 0x8000; 

    public LPVOID VirtualAllocEx(HANDLE hProcess, LPVOID lpAddress, long dwSize, int flAllocationType, int flProtect); 

    public int VirtualFreeEx(HANDLE hProcess, LPVOID lpAddress, long dwSize, int dwFreeType); 

    public LPVOID GetProcAddress(HMODULE hModule, String lpProcName); 
}