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We will add the user defined message WM_FIND, identified by the string literal “MYMESSAGE”, to a Document/View MFC application. First of all, the message can only be posted to objects of class CWnd or classes derived from CWnd, i.e. actual windows. This makes sense; only windows can receive window messages. Also note, that the class […]

The question of how to force only one instance of an application to run at a time is often asked. Although this is not a difficult problem to solve, and indeed can be solved in several different ways, it comes up enough to create the need for a nice, canned solution. So here it is. […]

This class is a wrapper for Console APIs. While browsing through the newsgroups, I realized that there are many developers who use console to output their diagnostic messages and to take input from the user in order to change the behavior during debug. So, Here it is. This class encompasses of one really important function […]

This is a small utility funtion will simply put up a userdefined message box with a string formatted like printf(). Example: int MsgBox(UINT nType, PSTR sz,…) { char ach[512]; va_list args; va_start(args, sz); wvsprintf (ach, sz, args); /* Format the string */ int retval = AfxMessageBox (ach, nType == 0 ? MB_OK|MB_ICONEXCLAMATION : nType); return […]

The attached zip contains a small class I use regularly. It is an interface to the win32 FormatMessage api for error-reporting. It’s use is very simple: when you detect a win32 error (could not open file for example): FILE *f = fopen(“idontexist.txt”, “r”); if(!f) { CErrorMessage em; // initializes with the current ::GetLastError if(em.MessageBox(“problem opening […]

I got tired of constantly coding something like this… char drive[_MAX_DRIVE], path[_MAX_PATH], fileName[_MAX_FNAME), ext[_MAX_EXT); CString newPath; _splitpath(fullpathname, drive, path, fileName, ext): . . . newPath = drive; newPath += path + fileName; newPath += differentExtension; . . . // etc I just added zip creation and self extracting exe functionality to my app and found […]

. Download the source. The zip file is 2KB. Adding Undo to an Existing Application For me, the utility of a new class often depends on how easy it is to add to an existing application. I really like the Scribble tutorial that is found on the Visual C++ CD-ROM so I’m going to use […]

. You can also find this and other articles at his web site at http://www.wizsoft.com/~poul/srs/ One size private heap class CWizOneSizeHeap. I wrote this class for very common situation: when you have to allocate many of small objects of the same size; the obvious case is some class widely used in a program. The assumption that […]

Now fasten your seatbelt and be prepared for a real fast flight across MSVC, Excel and Automation. I don’t really want to teach you understanding automation, rather I like to have your job done. 🙂 Please bear in mind, that I will describe one special task here: storing some information as an Excel sheet with […]

Download Source Code and Example The WINPE project is basically a conversion of Matt Pietreks PEDUMP Program from a DOS based application to an Windows MFC based app. It demonstrates Parsing PE files and displaying each section in a seperate view. A WIN32 PE file or better know as a .EXE or .DLL file is […]

I consulted article Article ID: Q119163 from Knowledge Base, and I think that it’s too complex code. Therefore I designed and implemented three classes for this: CPerfObject, CPerfInstance and CPerfCounter. Here the code for solve the subject problem, of course with help of classes called before. Classes can be improved. Function GetNameProcess can be easly […]

Using TrackMouseEvent is pretty simple. When the mouse enters the window you want to track, you call track mouse event telling it to inform you when the mouse leaves. When it does, it will send a WM_MOUSELEAVE message to that window. If you add this code to any of your existing view classes (or any […]