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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.
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THE MFC CLASSES The CDocument, CWinAppCFrameWnd and CView are derived from the CObject and they give the majority of the structure and functionality.
Dialog Based Application: (A) Dialog Based Application to demonstrate Animate Control: 1. Build a dialog based application. 2. Design the dialog as shown. 3. Place
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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
how do i create a change calculator that gives the denominations of coins for an amount of change up to .99 cents
Select Case: The Select Case is used for handling the multiple paths. The Select Case computes the expression and depending on the value of the equivalent Case statement execu
SDI Application The SDI application uses the main frame window to exhibit a document. Only one document can be opened at a particular time.
Displaying the file Without Scrolling: To display a file follow the steps as shown below: 1. Generate a SDI application. 2. Type the coding as shown in the Serialize els
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