Example App: Up/Down Counter
This app is the same basic idea as the Clicker-Counter app from earlier in the chapter, but with some differences:
The current count will be displayed in a label.
The current count will be stored in a global variable.
Two buttons will be used: one to increase count and one to decrease it.
You can set it up something like Figure 4.14, with a label and two buttons.
Figure 4.14 The Up/Down Counter app, in the Designer. ...
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