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.NET Forum / Windows Forms / WinForm General / July 2006.Net API Hooking or .Net Common Dialogs subclassing
Hello everyone, I have met a problem. If anyone on Earth knows why does .NET 2.0 is subclassing Common Dialogs' owner window, and why doesn't it set back the prevous WinProc address when quiting but is calling DefWndProc directly??? Does MS think that none will subclass those dialogs for particular needs? hmm... The only way found was API hooking, just to hook SetWindowLong and resubclass it again but here again MS comes into the scope, I could find no chances to hook APIs, which were DLLImported. Can you guys give me any suggestions? Hi, If this is the case and if you know when microsoft's subclassing happens you can try to subclass after. This way all the messages will go through your WndProc first and then you can let MS code call the DefWndProc as they wish.  SignatureHTH Stoitcho Goutsev (100) > Hello everyone, > [quoted text clipped - 10 lines] > find no chances to hook APIs, which were DLLImported. > Can you guys give me any suggestions? Well, actually the problem is that I can not catch the moment when it's unsubclassed.You see when closing common dialog removes the subclassing and set the address of DefWinProc. This doesn't allow me to subclass it again as I don't know when to do this. For some purposes you can try to use Dialog Workshop .NET components instead of subclassing These components are designed to replace standard Windows Forms dialog components. Specifically, you can add your own WinForm in the dialog (add your controls, preview pane, etc.), customize File list view control, add MRU files tab (like in VB6), etc. Also each dialog can be displayed as modeless window or it can be inserted as a child control in your own Windows Form. Supported dialogs: open/save, browse for folder, print, color, font, run, about, page setup, etc. Please visit for details: http://www.componentage.com Best regards, Alex > Hello everyone, > [quoted text clipped - 10 lines] > find no chances to hook APIs, which were DLLImported. > Can you guys give me any suggestions? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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