Thread: never lose focus

@marsjell

Here's the C++ code that I'm using:

I have two message procs in one Called WndProc which handles messages from my windows and one called WinampWndProc that I use to grab the winamp messages.

when the program starts (DLL init's) I repace winamps WndProc with my own:

In this case I have the hwnd (as it's a DLL plugin), I guess that if you want to do this then it would have to be a DLL.

//Get the original proc address
lpWndProcOld = (void *) GetWindowLong(plugin.hwndParent,GWL_WNDPROC);
//Set the address where winamp's win proc is
SetWindowLong(plugin.hwndParent,GWL_WNDPROC,(long) WinampWndProc);


so in WinampWndProc:

LRESULT CALLBACK WinampWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if(iwant the message)
do something with it
else
return CallWindowProc((long (__stdcall *)(struct HWND__ *,unsigned int,unsigned int,long))lpWndProcOld,hwnd,message,wParam,lParam) ;
}

Anyway that's the C++ version, perhaps someone could post the VB equivalent?

~MGP3Car

Sort of (but not quite) GetWindowLong(plugin.hwndParent,GWL_WNDPROC); gets the address of the wndproc, this is the proc that handles all messages (~events) for the window refered to by hwndParent.

So by setting that value to your own wndproc, (using SetWindowLong) your proc will get the messages, not the original winamp one.

But if you get a message in your proc that you don't want, then you can still pass it back to the real winamp one using CallWindowProc with the lpWndProcOld that you got with GetWindowLong.

Ahhhhh....... I see, a bit of confusion between the #defined value in c++ and what I guess VB would think is an implicit variable.
what you need is the value that GWL_WNDPROC is #defined to, no worries I'll check the value when I get home tonight (or you could track down the appropriate *.h file).
~MGP3Car

#define GWL_WNDPROC (-4)

Hope this helps

I don't know enough VB (if any at all =), but when I saw this thread I imagined you could solve your problem with an AutoIt script like this one:

Start:
IfWinNotActive,Title of your window,,WinActivate,Title of your Window
Goto,Start

I know it's a loop just like the one you wrote now (minimize all active windows), but this kind of script barely uses any resources. If you feel like trying it, here's the link:

http://www.hiddensoft.com/AutoIt/

But if you don't want to download the whole thing I could send you/post a compiled exe.

Let me know.