window handles

[nabeels786]

[top part resolved, it was backwards]

PostMessage(blisthandle,WM_CLOSE,&0,&0);

thats in VB...for C++, what do i put for the &0...NULL? it gives mem access error


how would i get the window handle of the edit box on the IM Message, it's subclassed by the window (classname: AIM_IMessage)

thanks
-nabeel

[filburt1]

&0 means 0 casted to a long, so, if I remember my C++ right, why not 0L, 0, or (long)0?

[nabeels786]

tried them. 0L and 0 didnt give an error.

but they still gave pointer error when i call that func. im not using pointers

void AIM_PROC::CloseWindows(){
	int tmp;
	while(tmp != 0){ 
		tmp=PostMessage(FindWindow("AIM_IMessage",NULL),WM_CLOSE,0L,0L);
	}
}

[kedaman]

VB uses int by default, when a constant fits into 16 bit range it will use a integer datatype, and to avoid the performance hit you declare it long with &. In C++ it doesn't matter between integer types, only bool might cause performance hit and a good compiler should warn about it.

[nabeels786]

so...

just stick 0's in there?

[kedaman]

yep, only time you need those postfixes is with float, and that is a small f. Also all floating points need at least one decimal, so const float x=0.0f;

[nabeels786]

it still gives me a pointer error

[kedaman]

a compiletime error? post it?

[nabeels786]

aim.exe is the name of my prog...not the AOL AIM

[kedaman]

oh yeah sorry, didn't read the first post
PostMessage to a null window? why not put that outside?

[nabeels786]

what do you mean?

the window is there, i made a little test thing that will return the handle, its there.