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CWnd::FromHandlePermanent Nish Nishant12-Aug-02 1:39 Nish Nishant 12-Aug-02 1:39  My understanding of CWnd::FromHandlePermanent is this :- If there is an existing CWnd within the current application's heap/stack that currently holds the window with the passed window handle, then CWnd::FromHandlePermanent will return that CWnd*. But unfortunately that's not happening. It does return a permanent CWnd but it's not matching the original CWnd So is my understanding flawed or is this some kinda funny side effect of something else in my code? Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: CWnd::FromHandlePermanent Tomasz Sowinski12-Aug-02 1:52 Tomasz Sowinski 12-Aug-02 1:52  Nishant S wrote: If there is an existing CWnd within the current application's heap/stack that currently holds the window with the passed window handle, then CWnd::FromHandlePermanent will return that CWnd*. FromHandlePermanent doesn't walk the stack or heap. It just checks the permanent map; permanent map gets new entries when you create objects derived from CWnd. It doesn't get updated when you call methods returning temporary CWnd's (like CWnd::FindWindow). Nishant S wrote: It does return a permanent CWnd but it's not matching the original CWnd Can you check the 'original CWnd' in QuickWatch window? Is it CTempWnd object? Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: CWnd::FromHandlePermanent Neville Franks12-Aug-02 1:58 Neville Franks 12-Aug-02 1:58  Hi Nish, Note that if you are using different threads then you won't see the CWnd* which is in one threads map in the other. Could this be the problem? Neville Franks, Author of ED for Windows. www.getsoft.com Beginners owner draw button Trollslayer12-Aug-02 1:38 Trollslayer 12-Aug-02 1:38  I am trying to get into custom controls and one problem is getting into owner draw buttons (derived from CButton). Can anyone suggest a good tutorial on this as most stuff on owner draw seems quite advanced. Thanks in advance. Elaine (fluffy tigress emoticon here) Would you like to meet my teddy bear ? Re: Beginners owner draw button Space Ace12-Aug-02 2:59 Space Ace 12-Aug-02 2:59  Well, there is a bit in "Programming VC++ 6.0" (Kruglinski, Wingo, Shepherd), Chapter 11, example 11D. In fact, there is an electronic variant of the book but it's a bit too large (about 11 Mb) Hope this helps. Re: Beginners owner draw button Shog912-Aug-02 7:29 Shog9 12-Aug-02 7:29  There are several nice articles on this site. You probably want to read through a couple of them before you get started, it shouldn't be too bad (most of the pain in doing custom or customized controls is dealing with backwards Windows crap...), so if you hit a specific problem you can always ask here. --- Shog9 If I could sleep forever, I could forget about everything... VARIANT and CString Mazdak12-Aug-02 0:55 Mazdak 12-Aug-02 0:55  I have a function that return variant.How can I cast it to CString? Mazy "If I go crazy then will you still Call me Superman If I’m alive and well, will you be There holding my hand I’ll keep you by my side with My superhuman might Kryptonite"Kryptonite-3 Doors Down Re: VARIANT and CString DanielO12-Aug-02 1:16 DanielO 12-Aug-02 1:16  VARIANT v; CString strValue; //TCHAR sz[5]; VariantInit(&v); v.vt = VT_BSTR; v.bstrVal = strValue.AllocSysString(); //v.bstrVal = SysAllocString(sz); //do something with variant SysFreeString(v.bstrVal); VariantClear(&v); another way around Variant v; //variant gets value CString strValue(v.bstrVal); hope it helps DanielO Re: VARIANT and CString Mazdak12-Aug-02 1:27 Mazdak 12-Aug-02 1:27  Thats perfect.Thanks a lot. Mazy "If I go crazy then will you still Call me Superman If I’m alive and well, will you be There holding my hand I’ll keep you by my side with My superhuman might Kryptonite"Kryptonite-3 Doors Down Re: VARIANT and CString Shamoon12-Aug-02 1:34 Shamoon 12-Aug-02 1:34  Can any one tell m how to convert Variant to std::srting and char * Re: VARIANT and CString Stefan Pedersen12-Aug-02 3:25 Stefan Pedersen 12-Aug-02 3:25  use the c_str() method Re: VARIANT and CString Daniel Turini12-Aug-02 8:24 Daniel Turini 12-Aug-02 8:24  CString s( _variant_t(FunctionReturningVariant()) ); Concussus surgo. When struck I rise. User-defined parameter and WH_CBT hook! Nish Nishant12-Aug-02 0:52 Nish Nishant 12-Aug-02 0:52  Hello Is there any way to pass a user defined param to a WH_CBT hook? Regards, Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: User-defined parameter and WH_CBT hook! Tomasz Sowinski12-Aug-02 1:04 Tomasz Sowinski 12-Aug-02 1:04  Nishant S wrote: Is there any way to pass a user defined param to a WH_CBT hook? AFAIK, not directly. Is your hook thread or global? Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: User-defined parameter and WH_CBT hook! Nish Nishant12-Aug-02 1:25 Nish Nishant 12-Aug-02 1:25  Tomasz Sowinski wrote: Is your hook thread or global? thread hook. The hook proc is a static method of a class. I want to pass the instance pointer to the hook proc as I need to access some instance variables there Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: User-defined parameter and WH_CBT hook! Tomasz Sowinski12-Aug-02 1:32 Tomasz Sowinski 12-Aug-02 1:32  Nishant S wrote: The hook proc is a static method of a class. I want to pass the instance pointer to the hook proc as I need to access some instance variables there You have a variety of solutions to consider, from simple global variable through static data members to super-dooper object-oriented function adapters. I'd create another static method which gets the parameter, stores it in private static member and calls SetWindowsHookEx with address of static hook proc. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: User-defined parameter and WH_CBT hook! Nish Nishant12-Aug-02 1:58 Nish Nishant 12-Aug-02 1:58  Tomasz Sowinski wrote: I'd create another static method which gets the parameter, stores it in private static member and calls SetWindowsHookEx with address of static hook proc. Nope. I want thread-safety. Right now I am thinking in terms of using a CMapPtrToPtr. Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: User-defined parameter and WH_CBT hook! Tomasz Sowinski12-Aug-02 2:15 Tomasz Sowinski 12-Aug-02 2:15  Nishant S wrote: Right now I am thinking in terms of using a CMapPtrToPtr. Beware of CG, who's going to jump in and tell you that CMapPtrToPtr is a donkey crap and you should use std::map instead If you're going to stick with CMap-based container, consider the typed variants (CTypedMapxxx). Or - you could use thread-local storage, which basically gives you per-thread statics. Check TlsXXX functions or __declspec(thread). Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: User-defined parameter and WH_CBT hook! Daniel Lohmann12-Aug-02 2:18 Daniel Lohmann 12-Aug-02 2:18  Nishant S wrote: Nope. I want thread-safety. Right now I am thinking in terms of using a CMapPtrToPtr To map what exactly to what? If you need thread safety, you could also use a thread local static class variable to store the instance pointer. Of course, I would recommend to use a super-dooper object-oriented function adapter just as described in my article Use member functions for C-style callbacks and threads - a general solution -- Daniel Lohmann http://www.losoft.de (Hey, this page is worth looking! You can find some free and handy NT tools there ) Re: User-defined parameter and WH_CBT hook! Shog912-Aug-02 3:16 Shog9 12-Aug-02 3:16  Check out the technique i used for hooks in this article. Maximilian Hänel introduced me to this technique (which is very similar to what ATL uses) in his WTL port; it uses a template wrapping a few asm instructions & a class pointer to store both along *with* the callback address. --- Shog9 If I could sleep forever, I could forget about everything... pop of the tops Zizilamoroso12-Aug-02 0:41 Zizilamoroso 12-Aug-02 0:41  I'm a bit lost here. How can I add a popupmenu to, let's say, a listcontrol. The listcontrol is a member(m_ctrlList) of a dialog. I've got already this: //onrightclick in dialog CMenu menuPopup; menuPopup.LoadMenu(IDR_POPUP_MENU); Somebody knows what to do next? tnx... [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: pop of the tops Tomasz Sowinski12-Aug-02 0:45 Tomasz Sowinski 12-Aug-02 0:45  menuPopup.GetSubMenu(0)->TrackPopupMenu(...); This assumes that you want to show the leftmost submenu. Usually there's only one, but some people like to aggregate all right-click popups used in application in one menu resource. You'll find detailed info on TrackPopupMenu arguments in MSDN. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: pop of the tops Zizilamoroso12-Aug-02 1:02 Zizilamoroso 12-Aug-02 1:02  I've added this: menu.GetSubMenu(0)->TrackPopupMenu(TPM_LEFTALIGN|TPM_RIGHTBUTTON,0,0,this); I receive an access violation when running in CMenu::TrackPopupMenu, m_hMenu is NULL. [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette! Re: pop of the tops Tomasz Sowinski12-Aug-02 1:09 Tomasz Sowinski 12-Aug-02 1:09  frisco wrote: I receive an access violation when running in CMenu::TrackPopupMenu, m_hMenu is NULL. That's because you don't have a popup menu. You've probably defined all items on top level. TrackPopupMenu can't use that - move the items into popup menu. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: pop of the tops Zizilamoroso12-Aug-02 1:20 Zizilamoroso 12-Aug-02 1:20  In the resource browser, under the menu folder, I've got one menu resource called IDR_POPUP_MENU. Where and what should I add there, cause if we add a popupmenu there, we can't give it an ID, and if I add a normal menuitem, an error occures. [VISUAL STUDIO 6.0] [MFC] [WIN98/2] Bluute tette!

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