C / C++ / MFC

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How to hook? Pony18-Dec-01 7:03 Pony 18-Dec-01 7:03  Hello.. I want to know how to hook all mouse messages in the windows system. (I'm writing an application that gets text input from where a mouse is pointed in every windows.) Guide me, please. Re: How to hook? Ravi Bhavnani18-Dec-01 7:08 Ravi Bhavnani 18-Dec-01 7:08  http://www.codeproject.com/dll/hooks.asp /ravi "There is always one more bug..." ravib@ravib.com http://www.ravib.com Re: How to hook? 18-Dec-01 13:42 18-Dec-01 13:42  search on MSDN. They have good article and sample on hooks. Install Shield 18-Dec-01 6:13 18-Dec-01 6:13  They tall that there are a version of Install Shield in VC++6.0. Is anybody know how it works? Thanks for help. Re: Install Shield Fredrik Skog18-Dec-01 20:14 Fredrik Skog 18-Dec-01 20:14  You should see it in your start menu if it came with your installation. I know it comes with the Enterprise edition of VS. You should be able to get the basic stuff going if you read the help. From there I guess it is trial and error. I have done a small installer that installs some DLLs and writes some keys in the registry. It did take some time, but once you have done one, it is pretty much the same for the next one. Cheers, /Fredrik Detecting Sound Card Mark Donkers18-Dec-01 4:54 Mark Donkers 18-Dec-01 4:54  Good morning/afternoon/night to everyone... Whereever you are. I'm developing an MFC app that will give the user audible feedback. The software needs to know whether to use the sound card (for .wav files) or use the PC speaker. The target platforms will be Win98/2000/NT/ME. Does anyone know how to reliably detect the presence of a sound card? Thanks. Mark Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope -- Daniel Burnham Re: Detecting Sound Card Michael P Butler18-Dec-01 5:01 Michael P Butler 18-Dec-01 5:01  What functions were you intended to use to play the wav, Windows Multimedia or DirectX? I think PlaySound returns FALSE if it can't play the wav file, you could then play a BEEP if it failed. Michael Re: Detecting Sound Card Mark Donkers18-Dec-01 5:09 Mark Donkers 18-Dec-01 5:09  I hadn't looked too deep into what function I would use. This "sounds" (ha ha) like a nice simple solution. Thanks. If any knows of any other methods, please let me know. Regards, Mark Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope -- Daniel Burnham Re: Detecting Sound Card Ernest Laurentin18-Dec-01 6:10 Ernest Laurentin 18-Dec-01 6:10  You could use UINT waveOutGetNumDevs() to know if any wave device is installed and then call the appropriate function or use Michael P. Butler method. Re: Detecting Sound Card Mark Donkers18-Dec-01 6:23 Mark Donkers 18-Dec-01 6:23  I think this was more of what I was looking for. Thanks to all! Mark Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope -- Daniel Burnham Re: Detecting Sound Card Halid Niyaz19-Mar-02 0:00 Halid Niyaz 19-Mar-02 0:00  hi i think you have sound to clear my problem. i.e i want to disable my sound card. how do i do that? do u have any idea, reply me Thanks in advance regards Halid BOOL vs bool Andrew Stampor18-Dec-01 4:30 Andrew Stampor 18-Dec-01 4:30  Just a quick question: what is the difference between BOOL and bool and when would I want to use one instead of the other? Re: BOOL vs bool Chris Losinger18-Dec-01 4:45 Chris Losinger 18-Dec-01 4:45  BOOL is a alias (typedef) for an integer. it works nicely with the Windows API, which, as a C API, knows nothing about "bool". it makes nice use of the fact that C (and C++) allow you to write conditionals like this: if (iNumeric) {...} where the condition is true if the test is a non-zero numeric value. "bool" is a native C++ type, not just an integer with a different name. i use "bool" whenever i can, just to keep things clean. with BOOL, there's the chance of accidentally using its integer properties (bVar = 5 * bTrue). -c Smaller Animals Software, Inc. Re: BOOL vs bool Bernhard18-Dec-01 4:52 Bernhard 18-Dec-01 4:52  as far as i know is bool a keyword from the c++ standard BOOL a data type of win32 i may be wrong.. but i think that is it.. (msdn says that bool should be in msvc++ > 4.2 an own data type and no typedef of an int, like in the old days.. and i gues BOOL is still a typedef of int) hope this helps a little bit bernhard "There are three roads to ruin: women, gambling and technicians. The most pleasant is with women, the quickest is with gambling, but the surest is with technicians." Georges Pompidou Re: BOOL vs bool Fazlul Kabir18-Dec-01 4:55 Fazlul Kabir 18-Dec-01 4:55  (1) bool is C++ specific data type that can have values true or false BOOL is Microsoft specific keyword that is nothing but an integer. As it's defined in "windef.h" typedef int BOOL; So if you plan to write portable (cross-platform) C++ code, don't use BOOL, use bool instead. (2) size of bool 1 byte, whereas the same for BOOL 4 bytes (which is the size of an 'int') (3) Use 'TRUE' and 'FALSE', while using BOOL and 'true' and 'false' for 'bool' BOOL b1 = TRUE; bool b2 = true; (4) Since BOOL is nothing but an 'int', take extra precaution in using it. Don't simply assume that a BOOL value of other that '1' is always false. My $0.02. // Fazlul Get RadVC today! Play RAD in VC++ http://www.capitolsoft.com Re: BOOL vs bool Tim Smith18-Dec-01 15:39 Tim Smith 18-Dec-01 15:39  Minor little point, sizeof (bool) is implementation specific. The standard even explicitly states it need not be one. I know, I know, I am being anal... Tim Smith Descartes Systems Sciences, Inc. Re: BOOL vs bool Fazlul Kabir19-Dec-01 6:29 Fazlul Kabir 19-Dec-01 6:29  I guess I was talking about the implementation on Win32 platform. You are right, other compilers like GCC and some Alpha versions use 4 bytes and even 8 Bytes implementations. Thanks for the comment. // Fazlul Get RadVC today! Play RAD in VC++ http://www.capitolsoft.com #File Error#'s Steve The Plant18-Dec-01 4:28 Steve The Plant 18-Dec-01 4:28  Hi! Recently, I've been getting errors in my output window that looks like: #File Error#(531) : {32787} client block at 0x034030B0, subtype 0, 64 bytes long. an invalid object at $034030B0, 64 bytes long It looks very much like a memory leak, but according to that first name, it looks like it's related to files. I'm having a bit of trouble debugging it because a) the module (a homebrew .dll) that seems to cause the message doesn't open files and b) Boundschecker doesn't even notice them. Any suggestions on how I should find what's causing this? Steve The Plant Re: #File Error#'s Alvaro Mendez18-Dec-01 6:04 Alvaro Mendez 18-Dec-01 6:04  Steve The Plant wrote: I'm having a bit of trouble debugging it because a) the module (a homebrew.dll) that seems to cause the message doesn't open files Huh, doesn't open files? You need to have the source files so you can fix the memory leak. You should be able to go to line 531 of that file and see where the memory was allocated that you didn't free. Regards, Alvaro Re: #File Error#'s Steve The Plant18-Dec-01 9:54 Steve The Plant 18-Dec-01 9:54  I understand the error a little more. The "#File Error#" part of the message means that it can't find the file the error occurs in, so instead of the filename it gives #File Error#. So, it knows there's a memory leak and it knows at what line it happens, but it doesn't know which file. Ugh. I'll investigate some more. Steve The Plant Making MFC go fullscreen 18-Dec-01 3:57 18-Dec-01 3:57  At first I thought this wasn't a problem at all. But now that I started an OpenGL-MFC based solution, all of a sudden I fail at even attempting to make this MFC app go full screen. I searched allot of sites over this 'issue', but I was really amazed by not finding any info on this. I only run into this problem using MFC. My rather silly simple problem is, how to make an MFC app go full screen? And I really mean fullscreen. Thanks for any help. Re: Making MFC go fullscreen Hadi Rezaee18-Dec-01 7:58 Hadi Rezaee 18-Dec-01 7:58  I don't know OpenGL, and i think OpenGL have a function for screen ! Anyway, you can use GetDeviceCaps for getting display coordinate and resize your program window to full screen ! My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie Re: Making MFC go fullscreen Rick York18-Dec-01 8:22 Rick York 18-Dec-01 8:22  Have a look at Q164162 in the knowledge base. It works for me. Re: Making MFC go fullscreen 18-Dec-01 9:34 18-Dec-01 9:34  Yes this does work. Although... it's not exactly a common known solution (if there is one) But it does work. Only problem left is that in XP I still have the window borders showing up. I 'solved' this by making the 'rectDesktop' 2 pixels larger. Hopefully that works on any desktop theme. Else I need to know a way to get the current border width. Thanks for your help, it helped allot. Re: Making MFC go fullscreen Todd.Harvey18-Dec-01 8:47 Todd.Harvey 18-Dec-01 8:47  I've been doing either this (in InitDialog) [ccode] BOOL returnCode = SetWindowPos( this->GetActiveWindow(), 0, 0, ::GetSystemMetrics(SM_CXMAXIMIZED), ::GetSystemMetrics(SM_CYMAXIMIZED), SWP_SHOWWINDOW); [/ccode] or this: [ccode] CRect rect; rect.top = 0; rect.left = 0; rect.right = ::GetSystemMetrics(SM_CXMAXIMIZED); rect.bottom = ::GetSystemMetrics(SM_CXMAXIMIZED); this->GetActiveWindow()->MoveWindow(rect,TRUE); [/ccode] If you do anything with OnSize, remember that it is called twice - once before InitDialog, and then again after InitDialog, and you can't move controls until InitDialog runs because they don't exit yet. (you didn't ask this, and I think I'm telling it correctly. You might also be interested in the EasySize class for moving dialog controls around as you resize a dialog - it is very helpful. (search this site if you are interested)

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