MFC, Subclassing window

Subclassing window

Author	Message
Sundari #1 / 5	Subclassing window Hi, Can someone tell me how dangerous it is to subclass a window belonging to another application. For example, I have an EXE from which I do a FindWindow and get another application's main window and Subclass it. What are the precautions and is this advisable? Can someone throw some light on the above? Regards, Sundari.
Mon, 01 Dec 2003 00:34:29 GMT

Rocky Dean Pulle #2 / 5	Subclassing window You can't just subclass a window from another exe in the Win32 environment. You need to use Windows Hooks, the only precaution I can suggest here is to go buy a book that explains it before trying to use it. For that book I'd suggest "Programming Applications for Windows" by Jeffrey Richter. Quote: > Hi, > Can someone tell me how dangerous it is to subclass a window belonging to > another application. > For example, I have an EXE from which I do a FindWindow and get another > application's main window and Subclass it. > What are the precautions and is this advisable? > Can someone throw some light on the above? > Regards, > Sundari.
Mon, 01 Dec 2003 00:58:31 GMT

Sam Hobb #3 / 5	Subclassing window You can't subclass a window belonging to another application because the other application is in another address space. In other words, your application does not have access to most of the other application's memory and it does not have access to most of your application's memory. Using a system-wide hook will allow you to get a DLL to execute in the other application's address space but system-wide hooks require advanced knowledge of Windows. Quote: > Hi, > Can someone tell me how dangerous it is to subclass a window belonging to > another application. > For example, I have an EXE from which I do a FindWindow and get another > application's main window and Subclass it. > What are the precautions and is this advisable? > Can someone throw some light on the above? > Regards, > Sundari.
Mon, 01 Dec 2003 01:34:33 GMT

Ajay Kalr #4 / 5	Subclassing window As earlier mentioned, you would use hooks. You can use CInjectDll class mentioned in this article: http://msdn.microsoft.com/library/periodic/period97/C++0497.htm -- Ajay Kalra [MVP - VC++] Note: Please post all replies to newsgroup only. Quote: > Hi, > Can someone tell me how dangerous it is to subclass a window belonging to > another application. > For example, I have an EXE from which I do a FindWindow and get another > application's main window and Subclass it. > What are the precautions and is this advisable? > Can someone throw some light on the above? > Regards, > Sundari.
Mon, 01 Dec 2003 01:41:26 GMT

Sam Hobb #5 / 5	Subclassing window I have some notes and links to most relevant documentation of hooks in: http://www.cpp.atfreeweb.com/Hooks.html And Joseph Newcomer has an article at: http://www.pgh.net/~newcomer/hooks.htm Quote: > Hi, > Can someone tell me how dangerous it is to subclass a window belonging to > another application. > For example, I have an EXE from which I do a FindWindow and get another > application's main window and Subclass it. > What are the precautions and is this advisable? > Can someone throw some light on the above? > Regards, > Sundari.
Mon, 01 Dec 2003 02:22:11 GMT

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