Siemens SINUMERIK 840D sl Commissioning Manual page 766

Graphic and logic elements
7.4 Custom widgets
Example
The class definition of the dll file should look like this:
#define SLESTESTCUSTOMWIDGET_EXPORT Q_DECL_EXPORT
class SLESTESTCUSTOMWIDGET_EXPORT SlEsTestCustomWidget : public QWidget
{
Q_OBJECT
Q_PROPERTY(double CUSVAR1 READ cusVar1 WRITE setCusVar1);
....
....
}
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SINUMERIK Integrate Run MyScreens (BE2)
Programming Manual, 03/2013, 6FC5397-1DP40-3BA1