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Windows 95 API Bible
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Windows 95 API Bible 3 Disc Set.iso
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Win32 API Bible Book 1 of 3.iso
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chapte25
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ex16.c
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C/C++ Source or Header
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1995-04-23
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2KB
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44 lines
#include <genstub.c>
// Windows message procedure.
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_COMMAND: // Process menu items.
switch ( LOWORD( wParam ) )
{
case IDM_TEST:
{
TCHAR szBuffer[128];
DWORD dwBaseAddr;
LDT_ENTRY ldtEntry;
CONTEXT context;
context.ContextFlags = CONTEXT_FULL;
GetThreadContext( GetCurrentThread(), &context );
GetThreadSelectorEntry( GetCurrentThread(), context.SegDs,
&ldtEntry );
dwBaseAddr = ldtEntry.BaseLow +
(DWORD) ldtEntry.HighWord.Bits.BaseMid << 8 +
(DWORD) ldtEntry.HighWord.Bits.BaseHi << 16;
wsprintf( szBuffer,
"LDT entry for %lX. Base = %lX, Type = %X, Priv = %X ",
context.SegDs, dwBaseAddr, ldtEntry.HighWord.Bits.Type,
ldtEntry.HighWord.Bits.Dpl );
MessageBox( hWnd, szBuffer, "Thread Selector Entry", MB_OK );
}
break;
case IDM_EXIT:
DestroyWindow( hWnd );
break;
}
break;
case WM_DESTROY:
PostQuitMessage( 0 );
break;
break;
default:
return DefWindowProc( hWnd, uMsg, wParam, lParam );
}
return NULL;
}