GDI+ Rectangle and Regions in VB.NET
In this article I will explain about Rectangle and Regions in GDI+.
In this article we will discuss addition functionality of rectangles and regions.
We will cover the following key topics:
.NET Framework objects that work with rectangles and regions and their members.
Graphics class members that work with rectangle and regions
Writing application using objects
The Rectangle structure and its members
The Region class and its members
Invalidating and clipping regions
Examples of real-world application using regions and rectangles
A rectangle has three properties: starting point, height, and width. Figure 6.1 shows these properties where the starting point is the top left.
Suppose you wanted to draw a rectangle from point (1,2) with height 7 and width 6. The final rectangle would look like Figure 6.2.
The filled rectangle occupies the entire within the range of its height and width.
FIGURE 6.1: A rectangle
FIGURE 6.2: A rectangle with starting point (1,2), height 7, and width 6
The Rectangle Structure
A rectangle object stores the top left corner and height and width of a rectangle region. In this section we will see how to create and use the rectangle structure.
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