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The Frame:
As the name suggests, the frame is a combination of the building blocks, structure and the borders of an item. The frame gives the "physical" presence to a window. The frame defines the position of an object with regards to the Windows desktop. The frame gives borders to a window, borders which the user can grab to size, move & resize the object. The frame is also a type of desk which holds the tools required on an application.
The application cannot exist without a frame. To provide a frame to an application, you can derive a class from the CFrameWnd.
The MFC provides a mechanism for notifying the views of modifications to a document through the UpdateAllViews member function of the CDocument class. The UpdateAllViews function traverse the list of views attached to the document. The function calls the OnUpdate of the CViewClass . Invalidate (TRUE) in OnUpdate clears the client region of the view and calls the OnDraw()function of the view class. The Document View architecture permits the variables in the document class to be exhibited in the view class using the GetDocument() function in the view class.
CONTEXT-SENSITIVE HELP The Context-sensitive help gives online help for the circumstances which is associated with that state. The Context-sensitive help can be implemented
MESSAGE LOOP The message loop is the code in the Win 32 based application. It retrieves messages from the application's message queue and passes these to the related window
Write an event procedure to automate the billing system of a supermarket. Give the details of database tables, forms, controls and menu design (if any). Make assumptions, wherever
Variable Scope Prefixes As script size rise, so does the value of being capable to rapidly differentiate the scope of variables. A one-letter scope prefix preceding type prefix
You are given a console program in both VB and C# that uses a class CElevator (ElevatorAppAssign). The main modules are in the assign directory class files. Below is a discus
Is that easy to learn
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
John''s gas supply is read from a 4-digit meter each month that shows the current total gas used in cubic meters. The amount of gas used that month is determined by subtracting t
You can employ Do...Loop statements to run a block of statements indefinite number of times. The statements are repeated either whilst a condition is True or till a condition becom
FILE SYSTEM CONTROLS There are 3 file system controls as shown in figure. The drive list box, directory list box & the file list box. The drive list box control is used to exhi
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