Take a standard Windows application. It loads a DLL using LoadLibrary to call a function in it (we'll call this DLL_A). That function loads another DLL (we'll call it DLL_B). The application now unloads the DLL_A DLL using FreeLibrary as it no longer requires it. The question is: Is DLL_B still in memory and loaded? Is this something...
While reading about the function InterlockedIncrement I saw the remark that the variable passed must be aligned on a 32-bit boundary. Normally I have seen the code which uses the InterlockedIncrement like this: class A { public: A(); void f(); private: volatile long m_count; }; A::A() : m_count(0) { } void A::f() { ::Inte...
I was debugging an application and encountered following code: int Func() { try { CSingleLock aLock(&m_CriticalSection, TRUE); { //user code } } catch(...) { //exception handling } return -1; } m_CriticalSection is CCricialSection. I found that user code throws an exception such that m_CriticalSection is...
Using the Win32 APIs, is it possible to create a Window or Dialog in one thread then collect events for it from another thread? Are HWNDs tied to threads? Trying the contrived example below I never see GetMessage() fire. HWND g_hWnd; DWORD WINAPI myThreadProc(LPVOID lpParam) { while(GetMessage( CreateThread(NULL, 0 myThreadP...
I'm making a 3D editor and I want Windows Explorer to show previews of the 3D models in the files when it's in thumbnail view mode. How do I do that? ...
I have to encrypt the output file in A application, then decrypt it in B application, but I found there are some limitations with MS encryption, if I encrypt a 1000 bytes buffer and then want to decrypt start for different position with different size in B application, the return values are error. Is there any encryption can meet my requ...
I have a simple WinCE network application (in C, Win32 APIs). I find that networking doesn't seem to work unless I launch IE (or another network app) first. I assume that IE is setting up my network interface in some way. How can I do this for myself? Might I need to display a list of available interfaces to the user (eg. WiFi/Ethernet...
I have an application written in C++ and MFC which is multithreaded running on windows. Occasionally I do get some complaints such as deadlocks or an unhandled exception which is caused because of these threads. Normally I use visual studio (if the problem is reproducible) or else use the WinDbg to analyse the dump files generated. Is th...
XMLNotepad provides the following text (for example) when a transform fails: Error Transforming XML The variable or parameter 'saturated-background-color' was duplicated with the same import precedence. How would I go about getting this error text programmatically? My code looks like this: CComPtr<IXSLTemplate> tmpl; HR...
This: http://msdn.microsoft.com/en-us/library/ms686915(VS.85).aspx Would seem to suggest not. I have three processes communicating via pipes. Process A Creates an event, Process B & C each use WaitForSingleObject (in a second thread). So now we have -TWO- Processes each waiting for a -SINGLE- event. Process A fires the event with Se...
I've got an application that sits in the system tray, which when double clicked on opens a window, fairly standard; however, when you close the window I'd like the window that was focussed before mine was opened to be given back focus. If I pop my window up by a keyboard shortcut, I'm able to restore the previous focus on close by using...
Hi, On NTFS, any file can have extended file information based on an Alternate Data Stream. Explorer displays this as a tab in the file properties dialog. I am quite sure there is a COM-Interface for reading/modifying this information, but I seem to be unable to come up with the right terms for my search. Can anyone give me a short poi...
Im learning C++ and i made a New program and i deleted some of the code and now my console window will not hide is there a way to make it hide on startup without them seeing it ...
Every program does have the scrollbar above the status bar. Right? Well, not mine. When i tried to set up my own scroll bars in my program, i suprisingly made them work! So did i manage to get the status bar work too! Hurray! :-) ...But the status bar is ABOVE the scroll bar, when it should be UNDER the scroll bar. How do i move the scr...
I have a small utility that was originally written in VS2005. I need to make a small change, but the source code for one of the dlls has been lost somewhere. Is there a free or reasonably priced tool to reverse engineer the dll back to C++ code. ...
Using WaitForMultipleObjects: Makes it possible, to wait for one or all of specified objects to change to a singled state Question: How can one wait for a specified amount - such as 5, for example Usage dwEvent = WaitForMultipleObjects( maxExpectedConnections, ghEventsA, TRUE,//but wait for a specified number instea...
To allow access to the Win32 API from a scripting language (written in C), I would like to write a function such as the following: void Call(LPCSTR DllName, LPCSTR FunctionName, LPSTR ReturnValue, USHORT ArgumentCount, LPSTR Arguments[]) which will call, generically, any Win32 API function. (the LPSTR parameters are essentially be...
I want to launch a web page in the default browser from my Win32 application. Both functions do the job. Is there any reason to use one or the other? ...
I'm currently experiencing a very strange problem with a CComboBox used within a CFormView. After adding strings to the combobox (created with WS_CHILD | WS_VISIBLE | WS_TABSTOP | WS_VSCROLL | CBS_DROPDOWN | CBS_SORT | CBS_AUTOHSCROLL), I'm selecting an entry via CComboBox::SetCurSel and resize the combobox via MoveWindow in the OnSize(...
Is there any simple Win32 API to check whether a pointer points to a valid memory location before using it for write operation? ...