Computer Programming Concepts and Visual Basic David I. Schneider

32 Computer Programming Concepts and Visual Basic
FIGURE 2-20 The Three Event Procedures
10. Now run the program by pressing F5.
11. Type something into the text box. In Figure 2-21, the words “Hello Friend” have
been typed. (A text box has the focus whenever it is ready to accept typing; that
is, whenever it contains a blinking cursor.)
FIGURE 2-21 Text Box Containing Input
12. Press the Tab key. The contents of the text box will be enlarged as in Figure 2-
22. When Tab was pressed, the text box lost the focus; that is, the event Lost-
Focus happened to txtPhrase. Thus, the event procedure txtPhrase_ LostFocus
was called, and the code inside the procedure was executed.
FIGURE 2-22 Text Box After It Has Lost the Focus
13. Click on the command button. This calls the event procedure cmd Bold_Click,
which converts the text to boldface. See Figure 2-23.
FIGURE 2-23 Text Box After the Command Button Has Been Clicked