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Qt/Embedded Pointer Handling

Pointer handling in Qt/Embedded works for any mouse-like device such as a touchpanel, a trackball, or real mouse.

In a real device, only a small number of pointer devices (usually one) would be supported, but for demonstration purposes, Qt/Embedded includes a large number of supported devices.

Mouse Protocols

Qt/Embedded normally auto-detects the mouse type and device if it is one of the supported types on /dev/psaux or one of the /dev/ttyS? serial lines. If multiple mice are detected, all may be used simultaneously.

Alternatively, you may set the environment variable QWS_MOUSE_PROTO to determine which mouse to use. This environment variable may be set to:

<protocol>:<device>

where <protocol> is one of:

MouseMan
IntelliMouse
Microsoft

and <device> is the mouse device, often /dev/mouse. If no such variable is specified, the built-in default is Auto which enables auto-detection of the mouse protocol and device.

To add another protocol, new subclasses of QAutoMouseSubHandler or QMouseHandler can be written in kernel/qwsmouse_qws.cpp.

Touch Panels

Qt/Embedded ships with support for the NEC Vr41XX touchpanel and the iPAQ touchpanel. These are subclasses of QCalibratedMouseHandler which is in turn a subclass of QMouseHandler in kernel/qwsmouse_qws.cpp.

Trademarks

Qt version 2.2.1