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The scope of a variable is finding out by where you declare it. While you declare a variable in a procedure, only code in that procedure can access or alter the value of that variable. It contain local scope and is called a procedure-level variable. If you declare a variable outside a process, you make it visible to all the process in your script. It is script-level variable, and it contain script-level scope.
How long a variable exists describe its lifetime. The lifetime of script-level variable extends from the time this is declared till the time the script is finished running. At process level, a variable exists only as long as you are in the process. While the procedure exits, the variable is destroyed. Local variables are ideal like temporary storage space while a process is executing. You can have local variables of the similar name in many different procedures because each is identified only by the process in which it is declared.
THREE MODELS FOR USER INTERFACE DESIGN The 3 models for the user interface design are the implementation model, mental model &the manifest model. The Implementation Mod
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
MDI Application: The MDI application utilizes the main frame window as the work space in which the user can open more document frame windows.
SDK PROGRAMMING The SDK programming is a developing Win 32 based programs using the Win 32 API that directly interact with the hardware. Therefore the execution of the SDK prog
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
Deleting Records: To remove a record use the Delete method. To delete the record from the customer table follow the coding as shown below: data1.RecordSource = "Customer"
Visual Interface Based On Visual Patterns: The visual user interface should create recognizable patterns and text will be used for differentiating the objects with similar pa
Default Values for GDI Objects: The default color for the brush is white, pen is black, and default bitmap is null and the default font is system.
IMAGELIST The CImageList object is a collection of the same sized images, all of which can be referred to by its index. The ImageList are used to proficiently manage the large
steps of connecting database from vb6.0
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