Qt环境变量说明
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See also QWSCalibratedMouseHandler and Qt for Embedded Linux Pointer Handling.
QT_ONSCREEN_PAINTIf defined, the application will render its widgets directly on screen. The affected regions of the screen will not be modified by the screen driver unless another window with a higher focus requests (parts of) the same region.Setting this environment variable is equivalent to setting the Qt::WA_PaintOnScreen attribute for all the widgets in the application.
See also the Qt for Embedded Linux graphics rendering documentation.
QWS_SW_CURSORIf defined, the software mouse cursor is always used (even when using an accelerated driver that supports a hardware cursor).QWS_DISPLAYSpecifies the display type and framebuffer. For example, if the current shell is bash, ksh, zsh or sh:The valid values for the <driver> argument are LinuxFb, QVFb, VNC, Transformed, Multi and keys identifying custom drivers, and the <display num>argument is used to separate screens that are using the same screen driver and to enable multiple displays (see the Running Qt for Embedded Linux Applications documentation for more details).
The driver specific options are described in the display management documentation.
QWS_SIZESpecifies the size of the Qt for Embedded Linux window which is centered within the screen. For example, if the current shell is bash, ksh, zsh or sh: QWS_MOUSE_PROTOSpecifies the driver for pointer handling. For example, if the current shell is bash, ksh, zsh or sh:The valid values for the <driver> argument are MouseMan, IntelliMouse, Microsoft, LinuxTP, LinuxInput, Tslib and keys identifying custom drivers, and the driver specific options are typically a device, e.g., /dev/mouse for mouse devices and /dev/ts for touch panels.
Multiple mouse drivers can be specified in one go:
Input will be read from all specified drivers.
See also Qt for Embedded Linux Pointer Handling.
QWS_KEYBOARDSpecifies the driver and device for character input. For example, if the current shell is bash, ksh, zsh or sh:The valid values for the <driver> argument are TTY, LinuxInput and keys identifying custom drivers, and the driver specific options are typically a device, e.g., /dev/tty0.
Multiple keyboard drivers can be specified in one go:
Input will be read from all specified drivers.
See also Qt for Embedded Linux Character Input.
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