Computer Programming Concepts and Visual Basic David I. Schneider

52 Computer Programming Concepts and Visual Basic
picPercent.Print category; amount / total
Input #1, category, amount
picPercent.Print category; amount / total
Close #1
End Sub
[Run and then click the command button. The following is displayed in the picture box.]
Transportation 0.1739072
Housing 0.3419534
Food 0.1349828
Other 0.3491566
■ INPUT FROM AN INPUT BOX
Normally, a text box is used to obtain input described by a label. Sometimes, we want just
one piece of input and would rather not have a text box and label stay on the screen forever.
The problem can be solved with an input box. When a statement of the form
stringVar = InputBox(prompt, title)
is executed, an input box similar to the one shown in Figure 2-25 pops up on the screen. After
the user types a response into the text box at the bottom of the screen and presses Enter (or
clicks OK), the response is assigned to the string variable. The title argument is optional and
gives the caption to appear in the Title bar. The prompt argument is a string that tells the user
what information to type into the text box.
FIGURE 2-25 Sample Input Box
When you type the parenthesis following the word InputBox, the editor displays a line
containing the general form of the InputBox statement. See Figure 2-26. This feature, which
was added in Visual Basic 5.0, is called Quick Info. Optional parameters are surrounded by
brackets. All the parameters in the general form of the InputBox statement are optional
except for prompt.
FIGURE 2-26 Quick Info Feature