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GetThreadContext.cpp
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GetThreadContext.cpp：Code Content
  1. #include <genstub.cpp>
  3. // Windows message procedure.
  4. LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  5. {
  6.    switch (uMsg)
  7.    {
  8.        case WM_COMMAND:       // Process menu items.
  9.                switch ( LOWORD( wParam )  )
  10.                {
  11.                   case IDM_TEST:
  12.                     {
  13.                        TCHAR szBuffer[128];
  14.                        DWORD dwBaseAddr;
  15.                        LDT_ENTRY ldtEntry;
  16.                        CONTEXT context;
  17.                        context.ContextFlags = CONTEXT_FULL;
  18.                        GetThreadContext( GetCurrentThread(), &context );
  19.                        GetThreadSelectorEntry( GetCurrentThread(), context.SegDs,
  20.                                                &ldtEntry );
  21.                        dwBaseAddr = ldtEntry.BaseLow +
  22.                                     (DWORD) ldtEntry.HighWord.Bits.BaseMid << 8 +
  23.                                     (DWORD) ldtEntry.HighWord.Bits.BaseHi << 16;
  24.                        wsprintf( szBuffer,
  25.                                  "LDT entry for %lX. Base = %lX, Type = %X, Priv = %X ",
  26.                                  context.SegDs, dwBaseAddr, ldtEntry.HighWord.Bits.Type,
  27.                                  ldtEntry.HighWord.Bits.Dpl );
  28.                        MessageBox( hWnd, szBuffer, "Thread Selector Entry", MB_OK );
  29.                     }
  30.                   break;
  31.                   case IDM_EXIT:
  32.                        DestroyWindow( hWnd );
  33.                        break;
  34.                }
  35.                break;
  36.        case WM_DESTROY:
  37.                PostQuitMessage( 0 );
  38.                break;
  39.           break;
  40.        default:
  41.             return DefWindowProc( hWnd, uMsg, wParam, lParam );
  42.    }
  43.    return NULL;
  44. }