On Thursday, 21 May 2020 at 18:42:47 UTC, Vinod K Chandran wrote:
Hi all,
I need to use the macro GET_X_LPARAM. But compiler says that "undefined identifier GET_X_LPARAM". I cant find any modules with GET_X_LPARAM defined. Do i miss something ?

GET_X_LPARAM isn't defined in Phobos's Windows bindings, so you'll need to
provide the definition yourself.

GET_X_LPARAM is defined as a macro in the windowsx.h header of the Windows SDK, as:
        #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))

Which can trivially be translated to D as a function, like so:

        int GET_X_LPARAM (T) (T lp)
        {
                import core.sys.windows.windef : LOWORD;

                return cast(int) cast(short) LOWORD(lp);
        }

Hope this helps :)


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