Use the function
ProUIThumbwheelAnchorSet() to set the position of the Thumbwheel with respect to a given anchor location. This function is applicable only if the parent of the Thumbwheel is a drawing area.
Use the function
ProUIThumbwheelSizeSet() to set the size of the Thumbwheel. This field is used only if the parent is a drawing area. The function will fail, if you specify a value smaller than the minimum size for the input arguments
width or
height.
Use the function
ProUIThumbwheelMinimumsizeGet() to retrieve the minimum size of the width and height of the thumb wheel in pixels. Use this function only if the parent is a drawing area.
Use the function
ProUIThumbwheelPositionSet() to set the position to the Thumbwheel with respect to its parent. This field is used only if the parent is a drawing area.
Use the function
ProUIThumbwheelPositionGet() to get the position to the Thumbwheel with respect to its parent. This field is used only if the parent is a drawing area.
Use the function
ProUIThumbwheelSizeGet() to get the size of the Thumbwheel. This field is used only if the parent is a drawing area.