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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.
INTRODUCTION TO CONTROLS AND TOOLBARS The Visual Basic programming is an event driven programming. In the form objects the termed controls are placed. We can put the properties
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
Do Until Loop Statement: The statements within the do...until loop block executes till the condition given in until become true. The working of do...until loop is elaborated w
DATA CONTROL The data control is used to connect to the database. Three properties are very necessary to connect to the database. The primary property is the database name. You
MESSAGES The Windows-based applications do not make explicit function calls to acquire input. They wait for the system to pass the input to them. The system passes input to the
Sets or returns context ID for topic in Help File. If Help file is indicated in the VBScript Err Object HelpFile Property, the HelpContext property is utilized to display automatic
Software That Is Rude: The software warns the user for making the mistakes. The Message boxes pop up representing the mistake and the user will have to click the OK or CANCEL
Assigning Values to Variables Values are assigned to variables creating an expression as follows: the variable is on the left side of the expression & the value you desire to a
Steps for Creating A MDI Form: 1. Build a new form and set IsMdiContainer property to true. 2. Build a child form class to add to the form. 3. Now Right click the proj
Illustration of GDI object CPen: 1. Generate a SDI application. And name it as gdipen. 2. Press ctrl (control key) and W altogether to invoke the class wizard. 3. Choose
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