C / C++ / MFC

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Sending Keypress to an HWND D3z27-Aug-02 2:20 D3z 27-Aug-02 2:20  Hi, i'd like to ask if someone have tried to do this: sending keypress to another window. not by sending window messages to the hwnd { i mean ::SendMessage(HWND,WM_CHAR,LP,HP) tecnique } but by emulating keypress itself! Someone knows how to do this ? Any help would be apprecied! See ya, D3sty Re: Sending Keypress to an HWND Tomasz Sowinski27-Aug-02 2:36 Tomasz Sowinski 27-Aug-02 2:36  Use keybd_event or SendInput. Tomasz Sowinski -- http://www.shooltz.com Free your mind and your ass will follow. Re: Sending Keypress to an HWND D3z27-Aug-02 14:23 D3z 27-Aug-02 14:23  thanks for your reply. it was really useful! D3z Screen Designer Source pinkcomponents27-Aug-02 2:15 pinkcomponents 27-Aug-02 2:15  Hi, I have developed a set of classes that allow developers to incorporate screen designer functionality into an application so that end users can customise screens in a controlled fashion, i.e. still accept updates. The classes allow existing fields to be added, hidden, moved and new fields to be added. Even if all of your application has been developed using a resource editor (as most app's are) it will still allow those controls to be modified at run-time. It works on CView, CDialog, CPropertyPage derived classes. I need some help in testing the code - before it is released, I think I can manage about 5 "BETA" testers - anyone willing to help? Regards Novo Star sound blaster sharonharoni27-Aug-02 0:50 sharonharoni 27-Aug-02 0:50  Hi, I have two sound blaster in my computer. I'm working with win 2000 pro. I would like to knew how (which command)can I approach each of them ? thanks. Re: sound blaster pankajdaga27-Aug-02 0:57 pankajdaga 27-Aug-02 0:57  Hi, Not sure what you mean by approach? But you should look at waveIn* APIs. Just look for waveInOpen, waveInClose etc. on MSDN. Pankaj Without struggle, there is no progress B+ tree source code Wanderley M27-Aug-02 0:46 Wanderley M 27-Aug-02 0:46  Does anybody have any B+ tree implementation in C++? Thanks! Wanderley Displaying Bitmap Shibu27-Aug-02 0:42 Shibu 27-Aug-02 0:42  Hi all, Iwould like to load a bmp picture in to my dialog during runtime and if the actual size of the bitmap is less than my dialogs view area the bitmap should be displayed as such exactly in the centre and if its size is greater the dialogs view area the bitmap should confine to the view area with scrolling capability.How can i achieve this?.Can anyone help me?. With regards Shibu Re: Displaying Bitmap Christian Graus27-Aug-02 1:16 Christian Graus 27-Aug-02 1:16  The scrolling is an issue, the rest is easy. Assuming you have a HBITMAP ( which a CBitmap can return ) you can do this: BITMAP bm; GetObject( bm, sizeof(BITMAP), myhBitmap); This structure tells you the width and height of your bitmap, the rest is simple maths. Draw the bitmap using BitBlt in your WM_PAINT handler, and if you want scrolling, you'll also need to draw two scrollbars, and use GetClientRect to find out the size of your dialog, then make the scroll range of each equal to the size of the bitmap - the size of the screen. i.e. if your bitmap is 200 wide and your dialog is 150 wide, you need the scrollbar to have a range of 50, so you can scroll across to see all of it. Then handle the scroll messages, and in them invalidate your dialog. Your draw routine should now draw the bitmap taking into account the scroll pos of the two scrollbars. To centre, it's just some basic math. And you're done. Christian We're just observing the seasonal migration from VB to VC. Most of these birds will be killed by predators or will die of hunger. Only the best will survive - Tomasz Sowinski 29-07-2002 ( on the number of newbie posters in the VC forum ) Cats, and most other animals apart from mad cows can write fully functional vb code. - Simon Walton - 6-Aug-2002 C++ syntax question pankajdaga27-Aug-02 0:39 pankajdaga 27-Aug-02 0:39  Hi, recently I came across the following code and was wondering if you could help me understand some syntax. #if 0 for (int i = 0; i < _Points; i++) _aTape[i] = 1600 * sin (2 * PI * 1000. * i / _sampleRate); #else for (int i = 0; i < _Points; i++) _aTape[i] = 0; #endif What are these #if and #else directives. Are they like the normal if/else. Also, what does the #if 0 evaluate to??? Thanks for any reply. Cheers, Pankaj Without struggle, there is no progress Re: C++ syntax question Tomasz Sowinski27-Aug-02 0:47 Tomasz Sowinski 27-Aug-02 0:47  #if, #else and #endif are preprocessor directives. #if 0 is used to quickly comment out part of the code. In your case, only the second version of the loop will be compiled. Tomasz Sowinski -- http://www.shooltz.com Free your mind and your ass will follow. Re: C++ syntax question pankajdaga27-Aug-02 0:55 pankajdaga 27-Aug-02 0:55  hmmmmm... I wonder why the guy used it then. I mean, if I understood you correctly only the second version of the loop will ever get executed, right? Thanks, Pankaj Without struggle, there is no progress Re: C++ syntax question Tomasz Sowinski27-Aug-02 1:02 Tomasz Sowinski 27-Aug-02 1:02  pankajdaga wrote: I wonder why the guy used it then He can quickly switch between two versions of the loop by changing '#if 0' to '#if 1' and recompiling. It's easier that using /* and */ Tomasz Sowinski -- http://www.shooltz.com Free your mind and your ass will follow. Re: C++ syntax question pankajdaga27-Aug-02 1:08 pankajdaga 27-Aug-02 1:08  Got it! Thanks man! Pankaj Without struggle, there is no progress CTreeCtrl (problem with setting item image) Mariusz Popiolek27-Aug-02 0:27 Mariusz Popiolek 27-Aug-02 0:27  Hi I'm trying to set item image with this code: CImageList m_ImageList; m_ImageList.Create(IDB_BITMAP1,18,10,(COLORREF)0xFFFFFF); int nCount = m_ImageList.GetImageCount();//after that nCount == 7 m_Tree.SetImageList(&m_ImageList,TVSIL_NORMAL); m_Tree.InsertItem( "text", 1, 1 ); , but it doesn't work properly. New added item has empty image(white) and looks like it would be shifted on the right (by the image width). I don't have the faintest idea what is wrong. thanks for any help Re: CTreeCtrl (problem with setting item image) Nish Nishant27-Aug-02 0:32 Nish Nishant 27-Aug-02 0:32  The problem is that m_ImageList is a temporary stack object. Make it a member of your class. Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: CTreeCtrl (problem with setting item image) Tomasz Sowinski27-Aug-02 0:37 Tomasz Sowinski 27-Aug-02 0:37  Your m_imageList seems to be local variable, despite the m_ prefix. It's destroyed as soon as program leaves the scope; tree control is left with invalid image list handle. Tomasz Sowinski -- http://www.shooltz.com Free your mind and your ass will follow. Re: CTreeCtrl (problem with setting item image) Mariusz Popiołek27-Aug-02 6:15 Mariusz Popiołek 27-Aug-02 6:15  Great thanks Of course solution was really simple and my mistake was really stupid but the most stupid errors are the most difficult to solve out. information about SP and UserRights hank scorpio27-Aug-02 0:25 hank scorpio 27-Aug-02 0:25  hello in my programm im lookin for some system information how do i get information about: the installed windows service pack and the rights of the loged in windows user (e.g. admin, power user) I use VC++ 6 and W2k can we call dynamic_cast in OnInitDialog SPGV27-Aug-02 0:18 SPGV 27-Aug-02 0:18  can we call dynamic_cast in OnInitDialog Re: can we call dynamic_cast in OnInitDialog Nish Nishant27-Aug-02 0:30 Nish Nishant 27-Aug-02 0:30  SPGV wrote: can we call dynamic_cast in OnInitDialog dynamic_cast is a C++ cast operator. You may use it anywhere in your C++ program [It has nothing to do with MFC or CDialog] Read my article [URL below] for more info on C++ cast operators. http://www.codeproject.com/managedcpp/castingbasics.asp Regards, Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: can we call dynamic_cast in OnInitDialog Tomasz Sowinski27-Aug-02 0:32 Tomasz Sowinski 27-Aug-02 0:32  Yes, assuming that RTTI is enabled in project settings (it's not by default in VC6). What kind of problems are you experiencing? Tomasz Sowinski -- http://www.shooltz.com Free your mind and your ass will follow. Re: can we call dynamic_cast in OnInitDialog Nish Nishant27-Aug-02 0:36 Nish Nishant 27-Aug-02 0:36  Tomasz Sowinski wrote: it's not by default in VC6 Woah! I didn't know that! Well, when I was still using VC++ 6 I used C-style casts That explains it I guess Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: can we call dynamic_cast in OnInitDialog #2 Nish Nishant27-Aug-02 0:41 Nish Nishant 27-Aug-02 0:41  Tomasz Sowinski wrote: it's not by default in VC6 Guess what! It's not by default in VC7 too. Default compiler option is /GR- for MFC projects. My mistake was that I've done all my recent casting stuff on MC++ projects which have /GR and not /GR- Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: can we call dynamic_cast in OnInitDialog #2 Tomasz Sowinski27-Aug-02 0:48 Tomasz Sowinski 27-Aug-02 0:48  Nishant S wrote: Guess what! It's not by default in VC7 too. I like that. If you want to use dynamic_cast and typeid, you'll better find some good reason and know what you're doing Tomasz Sowinski -- http://www.shooltz.com Free your mind and your ass will follow.

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