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Environment: Visual C++ 6 SP3 CBattery is a non-MFC class wrapper for the battery related Windows Power Management API functions. It may be used by notebook/laptops system utilities developed with Visual C++. CBattery implements the following public methods:  – BOOL SystemPowerStatusLoaded()  – BOOL ReloadSystemPowerStatus()  – SYSTEM_POWER_STATUS SystemPowerStatus()  – CBattery::AC_LINE_STATUS ACLineStatus()  – CBattery::BATTERY_FLAG BatteryFlag()  – CBattery::BOOL […]

This tutorial is for people who are just….and I mean just starting to know COM. I have not gone into details of what COM is and how COM works because you will find plenty of such stuff all around the web. Instead what I have done here is to give you some simple walk through […]

Environment: Windows NT4 SP3; Developed with Visual C++ 6 SP3 SetPrinter is a simple DLL COM that enables you to programmatically set the default printer: The problem that I faced is that if you attempt to specify the default printer from an application, that printer is not actually realized as the default printer by Windows […]

Environment: Windows NT SP5, Windows 95b/98, Visual C++ 6 1. General Methods For a very large application, dynamic memory allocation is common in C/C++ programming. For example, I ported Basin Modeling application from SUN workstation to PC 486 in 1992, cutting memory usage up to 90%. Generally two types of dynamic memory allocation methods are […]

Environment: Windows NT4 SP5, Windows 95b/98, Visual C++ 6 In engineering applications it is necessary to have 3D graphics functions which can make visualization using engineering data. The following simple classes provide such functions which have been implemented using SDK rather than MFC. 1. Features: (1). 2D, 3D, and True 3D (4D) display (2). Zooming […]

Environment: VC6 SP4, NT4 SP3 If You have ever the problem : “VB client keep crashing when compiled and not in the IDE if it has a worker thread” then here is a possible solution. In most cases of my work I develop ATL objects with worker threads. In the worker threads there must be […]

Environment: VC++ 5.0-6.0, NT 4.0, Win95/98, Win2000 Overview This article presents some classes that make customising window captions really quick and easy. Using these classes you can change the background colour and the text font and colour of both the active and inactive window captions independently for any windows you choose. I also provide an […]

Environment: VC6 SP4, NT4 SP5 Introduction This article is the result of some work I did in a recent project. I was improving a configuration program user interface for a complex client-server application where several databases where used. A common configuration option was what DSN (Data Source Name) to use. Since users had found it […]

This article was contributed by Zhaohui Xing. Environment: Windows NT4/2000 and Visual C++ 5.0 (and greater) This is the simplest prototype to demonstrate how to realize a basic Voice Communication via Internet/Network on PC platforms. The technique in this demo can be applied to develop the PC internet voice communication software, such as Internet Phone. […]

Environment: VC6 SP4, NT5 SP5 In an application I was developing, there was a need to implement some kind of the user interface for changing an object properties for different types of objects. Some object properties are static, but there are objects in which their propreties are changing, concerning their actual state. So I have […]

CHotButton is a subclassed CButton that has a "hot" area on the right. This makes it a dual purpose button, pressing the hotspot area sends the button notification BN_HOT_CLICKED instead of BN_CLICKED. Pressing the non-hot text area sends the normal BN_CLICKED notification. When the mouse hovers over the hot area, or when the keyboard focus […]

Environment: Visual C++ 6 SP4 About This article describes a Property List Box. This kind of list box is used by several IDE’s such as VB to set properties for controls. I wrote this originally for a custom Java IDE that I have been developing. Like the property boxes used by apps. like VB, the […]