TrackMouseDown

void CATKnob::TrackMouseDown ( const CATPOINT &  point, CATMODKEY  modKey   ) [virtual] TrackMouseDown() is called when a button is pressed inside the control. Generally, this should toggle the control into a pressed state, but not register a click or anything yet until TrackMouseRelease() is released within the same control. After TrackMouseDown() is called, the control will begin receiving TrackMouseMove() calls if the mouse pointer is moved. Parameters: point  - location the mouse was pressed modKey  - Key state modifiers for ctrl/shift/alt/etc. Reimplemented from CATControl. Definition at line 67 of file CATKnob.cpp. References CATCURSOR_HIDE, CATKNOB_CIRCLE, CATKNOB_VERTICAL, CATControl::fCursor, fCursorHidden, fFilter, fFilterCoef, fLastMove, fLastPoint, CATControl::fPressed, fStartPoint, GetActiveStyle(), CATControl::GetWindow(), CATWindow::OSSetMouse(), CATFilter::Reset(), CATFilterEWMA::SetCoefficient(), CATCursor::SetType(), SetValueFromPoint(), CATControl::TrackMouseDown(), and CATWindow::WidgetToWindow().

---