Visual C++: C++ Interview Question and Answers

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MFC OnPaint() vs OnDraw()

The two are more or less the same. OnPaint is the handler for a WM_PAINT message. OnDraw is the function that a MFC CView window calls when ...
C# DateTime.UtcNow in ISO 8601 date format

Here is the way to get a DateTime.UtcNow string which represents the same value in an ISO 8601 compliant format. DateTime.UtcNow.ToString(...
Memory Management

Memory Management The memory manager implements virtual memory, provides a core set of services such as memory mapped files, copy-on-write ...
Using resources from a DLL

Using Resources from DLL Requirements: ---------------------- Let us consider we have a DLL named 'FilingResource.DLL' containing re...
Short cut keys in Visual Studio

General Ctrl-X orShift-Delete Cuts the currently selected item to the clipboard Ctrl-C orCtrl-Insert Copies the currently selected item to t...
Message Reflection for Windows Controls

What Is Message Reflection? Windows controls frequently send notification messages to their parent windows. For instance, many controls se...
Fix WinForms DataGridView Exception: 'Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function.'

"Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function." The exception may occ...
101 Visual Studio 2010 Tips

>> Tip #1 How to not accidenta...
Visual Studio 2010 IDE Hangs when menu items are activated

Sometimes, When mouse over the main menu items (File, Edit, View … Window or Help), the IDE hangs. Sometimes, when clicking on the menu item...
C++, VC++ and MFC interview questions.

1.) How many constructor can a class have? A class can have any number of constructors. However after creating a constructor explicitly th...