Panasonic HMWIN User Manual page 86

The Control List Widget (available in the advanced category of the Widgets Gallery) is a good example of
how this macro command can be used. Here Up and Down buttons have been implemented using the
SendKeyWidget macro. See the figure below for reference.
Figure 86
To use the SendKey macro, you must define the keypad type as "Macro" in the Numeric Widget
NOTE
properties.
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HMWIN Studio User Manual