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May 17, 2002 CallWindowProc error | ||||
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Greetings, What's up with CallWindowProc, the following code fragment causes error: #include <windows.h> void main() { WNDPROC proc; HWND hwnd; UINT msg; WPARAM wparam; LPARAM lparam; ::CallWindowProc(proc,hwnd,msg,wparam,lparam); } sc Test.cpp -p -mn -C -WA -S -3 -a8 -c -gf -Ic:\dm\stl -oTest.obj Error: D:\MYPROJECTS\TEST\Test.cpp(10): need explicit cast for function parameter 1 to get D:\MYPROJECTS\TEST\Test.cpp(10): from: long (*std func)(void *,unsigned ,unsigned ,long ) D:\MYPROJECTS\TEST\Test.cpp(10): to : int (*__import std func)() Lines Processed: 124472 Errors: 1 Warnings: 0 Build failed Dimitri Kaparis, Independent Developer http://www.universalstudyhelper.com - software to help you study any subject. |
May 17, 2002 Re: CallWindowProc error | ||||
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Posted in reply to Dimitri Kaparis | One returns a long, the other returns an int. The prototypes should match. -Walter "Dimitri Kaparis" <dkaparis@universalstudyhelper.com> wrote in message news:ac2cs6$siq$1@digitaldaemon.com... > Greetings, > > What's up with CallWindowProc, the following code fragment causes error: > > #include <windows.h> > > void main() > { > WNDPROC proc; > HWND hwnd; > UINT msg; > WPARAM wparam; > LPARAM lparam; > ::CallWindowProc(proc,hwnd,msg,wparam,lparam); > } > > > sc Test.cpp -p -mn -C -WA -S -3 -a8 -c -gf -Ic:\dm\stl -oTest.obj > Error: D:\MYPROJECTS\TEST\Test.cpp(10): need explicit cast for function > parameter 1 to get > D:\MYPROJECTS\TEST\Test.cpp(10): from: long (*std func)(void *,unsigned > ,unsigned ,long ) > D:\MYPROJECTS\TEST\Test.cpp(10): to : int (*__import std func)() > Lines Processed: 124472 Errors: 1 Warnings: 0 > Build failed > > Dimitri Kaparis, > Independent Developer > http://www.universalstudyhelper.com - software to help you study any subject. |
May 17, 2002 Re: CallWindowProc error | ||||
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Posted in reply to Walter | WNDPROC is the type of the first parameter of CallWindowProc and that is exactly how it is declared in the headers. How come any difference? PS: I just found out that compiling with STRICT defined solves this problem, but this seems to be a bug. In article <ac3708$1hu1$1@digitaldaemon.com>, Walter says... > >One returns a long, the other returns an int. The prototypes should match. -Walter > >"Dimitri Kaparis" <dkaparis@universalstudyhelper.com> wrote in message news:ac2cs6$siq$1@digitaldaemon.com... >> Greetings, >> >> What's up with CallWindowProc, the following code fragment causes error: >> >> #include <windows.h> >> >> void main() >> { >> WNDPROC proc; >> HWND hwnd; >> UINT msg; >> WPARAM wparam; >> LPARAM lparam; >> ::CallWindowProc(proc,hwnd,msg,wparam,lparam); >> } >> >> >> sc Test.cpp -p -mn -C -WA -S -3 -a8 -c -gf -Ic:\dm\stl -oTest.obj >> Error: D:\MYPROJECTS\TEST\Test.cpp(10): need explicit cast for function >> parameter 1 to get >> D:\MYPROJECTS\TEST\Test.cpp(10): from: long (*std func)(void *,unsigned >> ,unsigned ,long ) >> D:\MYPROJECTS\TEST\Test.cpp(10): to : int (*__import std func)() >> Lines Processed: 124472 Errors: 1 Warnings: 0 >> Build failed >> >> Dimitri Kaparis, >> Independent Developer >> http://www.universalstudyhelper.com - software to help you study any >subject. > > Dimitri Kaparis, Independent Developer http://www.universalstudyhelper.com - software to help you study any subject. |
May 17, 2002 Re: CallWindowProc error | ||||
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Posted in reply to Dimitri Kaparis | They're Microsoft header files. There are a number of inconsistencies in them. "Dimitri Kaparis" <dkaparis@universalstudyhelper.com> wrote in message news:ac3jhd$1t3r$1@digitaldaemon.com... > WNDPROC is the type of the first parameter of CallWindowProc and that is exactly > how it is declared in the headers. How come any difference? > > PS: I just found out that compiling with STRICT defined solves this problem, but > this seems to be a bug. > > In article <ac3708$1hu1$1@digitaldaemon.com>, Walter says... > > > >One returns a long, the other returns an int. The prototypes should match. -Walter > > > >"Dimitri Kaparis" <dkaparis@universalstudyhelper.com> wrote in message news:ac2cs6$siq$1@digitaldaemon.com... > >> Greetings, > >> > >> What's up with CallWindowProc, the following code fragment causes error: > >> > >> #include <windows.h> > >> > >> void main() > >> { > >> WNDPROC proc; > >> HWND hwnd; > >> UINT msg; > >> WPARAM wparam; > >> LPARAM lparam; > >> ::CallWindowProc(proc,hwnd,msg,wparam,lparam); > >> } > >> > >> > >> sc Test.cpp -p -mn -C -WA -S -3 -a8 -c -gf -Ic:\dm\stl -oTest.obj > >> Error: D:\MYPROJECTS\TEST\Test.cpp(10): need explicit cast for function > >> parameter 1 to get > >> D:\MYPROJECTS\TEST\Test.cpp(10): from: long (*std func)(void *,unsigned > >> ,unsigned ,long ) > >> D:\MYPROJECTS\TEST\Test.cpp(10): to : int (*__import std func)() > >> Lines Processed: 124472 Errors: 1 Warnings: 0 > >> Build failed > >> > >> Dimitri Kaparis, > >> Independent Developer > >> http://www.universalstudyhelper.com - software to help you study any > >subject. > > > > > > Dimitri Kaparis, > Independent Developer > http://www.universalstudyhelper.com - software to help you study any subject. |
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