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DEVICE CONTEXT
The device context provides the essential drawing tools and the platform to draw. It helps to draw the text, shapes, lines etc. To create the device context, the MFC provides different classes like CDC and CClientDC.
The CDC is the most primary class to draw in MFC. It provides all of the fundamental drawing steps.
The CClientDC class is used for drawing in the client region of a window.
The Device context is a windows data structure which supports the device independent output.
The function of device context is best elaborated by the figure.
Figure: The Role of Device Context
The logical display is a virtual device and Actual display is the physical device. The programmers do not require worrying about the medium in which he is writing the output. The device context takes care of the output medium.
THE PRECOMPILED HEADER FILE As soon as you generate a blank project, ahead of doing any coding you compile the project to generate .pch (that is the pre compiled header) file a
MODELESS DIALOG The Dialog boxes are either modal or modeless. The modal dialog box should be closed (Unloaded or hidden) before you can continue the working with the rest of t
Returns or sets the name of the object or application which generated the error originally. The Source property indicates a string expression which is usually the class name or pro
PROGRAM TO ZOOM A RECTANGLE AS YOU DRAG 1. Generate a SDI application 2. Declare the 2 member variables clicked of Boolean type and m_ptoldpt of CPoint type. Use the class t
I have all my program done except the loan part that I am having a lot of troubles with
For naming anything variable names follow the standard rules in VBScript. A variable name: Should begin with an alphabetic character. Cannot have an embedded period. Sh
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The Refresh Method: The refresh method transfer to the first record in the record set. To invoke the refresh method follow the syntax which is as shown below: Form1.Data1.R
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INTRODUCTION to VISUAL C++ PROGRAMMING This section introduces you to develop the applications using VC++. The Single document interface (SDI), multiple document interface (MDI
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