Microsoft Windows 2000 API SuperBible

Specifying an Area for Drawing

There are many ways to specify where you want to draw on a device. At times, you will specify specific points, such as when drawing a straight line. Other times, you will specify that a figure is to be drawn within a bounding rectangle. In this case, you will typically specify either the x and y points of the upper-left and lower-right corners of the rectangle, or you will create a RECT structure that contains these coordinates.

Often, more complex drawing areas must be defined. In these cases, Windows provides regions and paths. You can create a region based on a rectangle, ellipse, or polygon, and you can combine multiple regions to create new regions. You create a path using the BeginPath function, after which ...