By Eric White
The booklet is geared toward a enterprise functions viewers, and provides designs and methods beneficial in that atmosphere. The supplied information regarding the semantics of GDI+ ("Graphics gadget Interface") is language agnostic, and the examples are written in C#. a very good operating wisdom of C# syntax and of the .NET Framework is thought.
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Up to date with the alterations to C#, starting C# 2008 items: From suggestions to Code introduces entire newbies to C# coding perform with a superior methodological origin written by way of critically–acclaimed specialists within the box, already authors of the best–selling starting C# gadgets. through development from first rules in object–oriented terminology, then advancing via program layout with Unified Modeling Language (UML) into useful examples, starting C# 2008 items: From thoughts to Code offers a foundational advisor written from the point of view of 2 skilled, operating experts on C#.
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You'll learn more about the effects of pen width in Chapter 3. Filling a Rectangle When you fill a rectangle, you actually fill in the entire area of the rectangle, not just draw the perimeter of the rectangle. Black, 1, 0, 5, 4); The result is shown in Figure 2-10. Given what you saw when you drew a rectangle using a pen width of 1 pixel, this isn't what you might have expected. As you can see, the width really is 5 pixels, not 6 pixels, and the height really is 4 pixels, not 5 pixels! Why is this?
Figure 2-5: Parts of a window In Figure 2-5, the decorations include the title bar (and all of the buttons on the title bar) and the border that surrounds the window. It is possible to create a borderless form that would allow you to draw over the entire surface of the window. The ClientSize Property When you create a new form, either programmatically or using the Design window in Visual Studio, you specify the form's Size property, which sets the size of the entire window (including the decorations).
Figure 2-6: Coordinate gridlines Drawing Lines So what happens when you want to draw, say, a straight line? Black, 1, 2, 5, 2); Here, we've specified the line as starting with pixel (1, 2) and ending at pixel (5, 2). The result of this operation is that five pixels have been drawn in black, as shown in Figure 2-7. 0 Graphics Programming Figure 2-7: A horizontal line It's worth noting how the length and width relate to the gridlines themselves. We've effectively asked for a vector line to be drawn between the points (1, 2) and (5, 2), and so we might have expected to see a line 4 pixels long, because the points (1, 2) and (5, 2) are exactly 5 - 1 = 4 pixels apart.