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. ClipConvert is a utility to fix a problem that Windows 95 and 98, and in some cases NT, have when copying/pasting text in a codepage different from the system codepage. Something you run across often when doing localization tasks. In addition, it’s also a good tool to examine the content of the Clipboard. Environment: […]

In IE5, you can delete Temporary Internet Files in “Internet Options” property sheet. Do you ever wonder how to delete Temporary Internet Files in your application? Here is how it can be done by using WinInet APIs: FindFirstUrlCacheEntry, FindNextUrlCacheEntry, DeleteUrlCacheEntry, and FindCloseUrlCache. It is not documented, but I have tested it and it works, with […]

Do you want to have a feature (in your own application) of “Clear History” like IE5 does in its “Internet Options”? Here is how you can do it. It’s not documented, but I have tested it and it works, with VC++ 6.0 and Win98/NT. #include // Delete all items in History folder HRESULT ClearHistory() […]

DESCRIPTION This smart pointer package provides 2 main classes for use 1. CountedPtr – Is a reference counted smart pointer that can be used with any type – Allows direct assignment to base class smart pointer by a derived class – Supports static and dynamic casts where they are supported by the underlying types – […]

Environment: VC6 SP2, NT4 SP5, CE 2.11, Windows Y2K This Tip-Static control very smoothly show and hide Today’s tip. I think this control is so simple and useful. Just use it!! Usage Include TipStatic.cpp and TipStatic.h in your project. Create a new CTipStatic class object and just invoke Create function. In your header file. #include […]

Environment: Windows NT4 SP4, Windows 95/98 For those among us who develop ActiveX/COM objects, here’s a little trick to help you with registering/unregistering your components easily. With a simple modification to the registry, you will have additional register/unregister menu options (accessible with the right-mouse button) integrated in your Windows Shell, as shown in the above […]

Environment: VC6 SP3, NT4 SP5, Windows 2000 Beta 3 This code allows you to make use of the MFC print preview architecture without using the document/ view architecture. This is accomplished by overriding some key functions from the MFC CView class and CPreview class. I have introduced two new classes with the required overrides called […]

This is a simple way to abort from a long computation if the escape key is pressed. Just call escape_pressed() periodically from your procedure, and if TRUE is returned, abort. BOOL escape_pressed() // return TRUE if escape pressed { MSG msg; // check for messages and remove from queue if (::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) […]

Until now all smart pointer implementations that I have seen didn’t support assignment between base and derived class pointers. Here is an implementation that does support it. I give you two implementations of smart pointers: 1) Ptr – This smart pointer assumes that ‘T’ support reference counting by deriving from IRefCount (which is also supplied). […]

In a tree control it often becomes necessary to display the complete path in the tree from the selected item to the root. The path can be displayed as a string comprising of the labels of the tree items and starting from the root node to the selected item or from the selected item to […]

Environment: VC6 You can use embedded property sheet in your application. I use “Creating a Property Sheet Inside a Dialog” by Zafir Anjum, as start solution. 1st step. You must derive class from CPropertyPage and add CPropertySheet member to this class: class CPropertyPageWithPropertySheet : public CPropertyPage { … public: virtual BOOL UpdateData(BOOL bSaveAndValidate); virtual void […]

This project provides derived MFC classes for painlessly implementing Property Sheets in a CFormViews.  This implementation puts the Property Sheet at the bottom of the view as shown in the following image: Four derived MFC classes are used in this implementation. CPropPgFormView: a CFormView derived class. CPropPgFormDoc: a CDocument derived class. CViewPropertyPage: a CPropertyPage derived […]