Brew MP 1.0.2
Gets the transparency threshold of the widget.This threshold value is tied
to TOUCH_MODE_TRANSPARENCY. So, when transparency threshold is set, any pointer
event at a coordinate with a transparency value less than or equal to this
threshold limit passes through while anything above transparency threshold
is caught by the widget. By default, threshold is set to 0.
Threshold value 255 indicates 100 percent transparent and 128 indicates
50 percent transparent.
[in] Pointer to the IWidget interface object.
[out] Pointer to the value that holds the transparency threshold