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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.
Variables must always be described with the smallest scope possible. VBScript variables can have the given scope. Scope Where Variable is Declared
The Dictionary object stores data as key, item pairs. A Dictionary object is the corresponding of a PERL associative array. Items, that can be any form of data, are stored in the a
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
Message Handling: 1. The message is send to the window. And it is sent to the Window Procedure. 2. The message map holds all the message handlers. 3. The window procedur
Option Explicit Declaration: If the option explicit is used essentially then all the variables will have to be declared. Or else an error will be reported saying that the vari
ARCHITECTURE OF WIN 32 PROGRAM Figure: working of Win 3 program The hardware events in the figure are the mouse associated events like the mouse move, left
DYNAMIC LINK LIBRARY The dynamic link library (dll) permits one copy of a function to be shared among some parallel executing programs. The dll is a file that contains a num
Benefits of Using DLLs: The dynamic linking has the following advantages which are as shown below: It saves memory and decreases the swapping. Many processes can use a s
Returns or sets a numeric value indicating an error. Number is the Err object's default property. While returning user-defined error from an Automation object, set Err.Number throu
APPWIZARD The Appwizard is a tool used for creating a project. It follows a series of steps to create a project. Steps Involved in Creating A Project: Step 1: Fr
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