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c++windowswinapiwindow-messages

Where to find definition of window message WM_UAHDRAWMENUITEM (0x92)

I'm writing a hook dll, which handles window drawing messages.
I found for Vista and above, some unknown message id are received by the hook dll, specifically 0x90 ~ 0x95.
I did some googling and found an msdn link and this, which told me what message they're: 

#define WM_UAHDESTROYWINDOW 0x0090
#define WM_UAHDRAWMENU 0x0091
#define WM_UAHDRAWMENUITEM 0x0092
#define WM_UAHINITMENU 0x0093
#define WM_UAHMEASUREMENUITEM 0x0094
#define WM_UAHNCPAINTMENUPOPUP 0x0095

But I can't find definition of macro WM_UAHDRAWMENUITEM in any header files, the compiler complains about "undefined symbols". I did a global search on "WM_UAHDRAWMENUITEM" but found nothing.

At present I'm using 0x92 to handle this message.
My question is: how to nicely replace hard-coded 0x92 with a Windows-defined macro?

Solution

  • how to nicely replace hard-coded 0x92 with a Windows-defined macro?

    Obviously, your installed version of the Win32 SDK does not have the macros, so you can't use them. But you have the #define values, so just copy/paste them directly into your own code. If you want, you can wrap them in an #ifdef so that if you ever upgrade to an SDK version that has them natively, the native macros will be used, otherwise the compiler will keep using your manual ones.

    #ifndef WM_UAHDRAWMENUITEM
#define WM_UAHDRAWMENUITEM 0x0092
#endif