ChartDirector 7.1 (C++ Edition)

QChartViewer.getMouseWheelZoomRatio

Usage

double getMouseWheelZoomRatio();

Description

Gets the magnification ratio for each mouse wheel event.

Please refer to QChartViewer.setMouseWheelZoomRatio for the usage of this ratio.

Arguments

None

Return Value

The magnification ratio.

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