OnMouseWheel

[henry128]

Maybe a stupid question but: I'm on Win2k with Visual C++ 6.0 and it seems nearly impossible to get any mousewheel code to work..... I had to specifically #define WM_MOUSEWHEEL 0x020 to avoid "undeclared identifier" messages. Sadly my OnMouseWheel method is not recognized anyway. I encountered several working MFC examples. Unfortunately I don't use MFC so my question is: Is it possible to get this working without MFC? Do I need a special include for this? thanx in advance

[PJ Arends]

From WinUser.h

#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
#define WM_MOUSEWHEEL 0x020A
#endif

Notice the #if? Make sure _WIN32_WINNT or _WIN32_WINDOWS is defined properly.

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"You're obviously a superstar." - Christian Graus about me - 12 Feb '03 "Obviously ???  You're definitely a superstar!!!" mYkel - 21 Jun '04 Within you lies the power for good - Use it!

[Joel Lucsy]

http://www.codeproject.com/cpp/intellimouse_msg.asp[^] -- Joel Lucsy

[lzzqqq]

copy the file user.h who at the directory: ...VC98\include\ just under the VC++ install directory. Try it, good luck !:cool:

[henry128]

Joel Lucsy: I clicked on the link but the (forum) page states that the page can't be found.....

[henry128]

thanks for respons. I'm beginner to Winprog and VC++ I tried including , but no improvement. Still the same undeclared WM_MOUSEWHEEL identifier.... My WM_LBUTTONDOWN is accepted though, both with and without . WM_LBUTTONDOWN must be defined elsewhere also I concluded. Next I outcommented WIN32_LEAN_AND_MEAN in Stdafx.h hoping this would make a difference. nope. Other includes (a.o.): windows.h en windowsx.h

[Joel Lucsy]

The button that transforms the url into a link puts a / at the end of the url which shouldn't have been there. Try this. http://www.codeproject.com/cpp/intellimouse_msg.asp[^] -- Joel Lucsy

[henry128]

Thanks. It seems I made a mistake Moreover I assumed that VC++ would "know" what platform I'm working on: this seems to be not the case. I #defined _WIN32_WINNT as 0x0500 abd now everything is working fine..:)