tools::Windows Namespace Reference

Classes
class	glarea
class	session
class	sg_viewer
class	window

Functions
bool	is_message_touch_event ()

Function Documentation

is_message_touch_event()

bool tools::Windows::is_message_touch_event ( )

inline

Definition at line 26 of file glarea.

                                     {
  // from https://stackoverflow.com/questions/29857587/detect-if-wm-mousemove-is-caused-by-touch-pen.
  static const LONG_PTR c_SIGNATURE_MASK = 0xFFFFFF00;
  static const LONG_PTR c_MOUSEEVENTF_FROMTOUCH = 0xFF515700;
  LONG_PTR extraInfo = ::GetMessageExtraInfo();
  return ( ( extraInfo & c_SIGNATURE_MASK ) == c_MOUSEEVENTF_FROMTOUCH );
}