重新加载 tslib 触摸屏校准
背景： 我正在开发一个基于 Qt 的大型 GUI，它处理与触摸屏的所有用户交互。该程序的设计使得用户不需要访问命令提示符即可执行任何操作，包括重新校准触摸屏。我编写了 tslib 的 ts_calibrate 实用程序的仿制品，它作为 QWidget 运行，并且可以修改 /etc/pointercal 中的 tslib 校准文件。
但是，虽然我可以修改校准文件，但在关闭并重新启动程序之前，对校准的更改似乎不会应用。我已经编写了一个可以处理重新打开程序的脚本，但我想找到一种更优雅的方法来执行此操作，以便将用户的麻烦保持在最低限度。
简单地说， Qt 的类之一中是否有一个函数可以动态重新加载 tslib 的校准文件，而无需重新启动应用程序？我查看了 QWSServer 类参考，但没有找到任何类似的内容它做我想做的事。
Background: I am working on a somewhat large Qt-based GUI which handles all user interaction with a touch screen. The program is designed such that the user should not need to access a command prompt in order to do anything, including recalibrating the touch screen. I have written an imitation of tslib's ts_calibrate utility which runs as a QWidget and can modify tslib's calibration file at /etc/pointercal.
However, although I can modify the calibration file, changes to the calibration do not seem to be applied until I close and restart the program. I have written a script which can handle re-opening the program, but I would like to find a more elegant way of doing this so that the user's hassle is kept to a minimum.
Simply put, is there a function available in one of Qt's classes which will reload tslib's calibration file on the fly, without restarting the application? I have looked through the QWSServer class reference but I did not find anything that looks like it does what I want it to.
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事实证明，可以在不重新启动应用程序的情况下重新加载驱动程序。为此，您可以使用 QWSServer 类 像这样：
这将导致重新加载 tslib 的校准文件。例如，如果您以错误的校准启动程序，请在程序运行时更正触摸屏的校准文件，然后调用这些方法，指针将调整为新的校准。
It turns out that the driver can be reloaded without restarting the application. To do so, you can close and re-open the pointer device(s), using methods in the QWSServer class like so:
This will cause a reload of tslib's calibration file. E.g., if you started the program with a faulty calibration, correct the calibration file for the touch screen while the program is running, then invoke those methods, the pointer will adjust to the new calibration.
tslib 与 Qt 无关。您可以下载 tslib 的源代码并查看tests/ts_calibrate.c 的作用。
tslib has nothing to do with Qt. You can download the sources of tslib and look what tests/ts_calibrate.c does.
ts_reconfig()应该做你想要什么。ts_reconfig()should do what you want.