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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.
Record Set: The record set presents the records in a base table or the records retrieved due to the query. The record set falls into 3 classes. These are table type record set
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Adding Records: 1. As in the earlier case Set the DatabaseName property as "C:\ex.mdb", now Set the Record Source for the data control as Customer and Set the Record Type to 0
Use of WM_SIZE Message: Whenever the WM_SIZE message is handled and the graphical objects on the output window will also change consequently to the output window. The functi
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How to pull ordered menu from a cash till to database or display on a computer screen
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
need help with logic part of loan program
Hi, i need help in vb.net for the pelmanism game. I will appreciate if you can get back to me please
I need assistance with writing the Tryparse I have 98% of the assignment done.
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