输入字段获得焦点时，如何使Windows 8平板电脑打开屏幕键盘? [英] How to make Windows 8 tablet open the on-screen-keyboard when an input field gets focus?

问题描述

我正在为Windows 8.1平板电脑开发一个应用程序(使用Java&eclipse RCP).

I am developing an app for a Windows 8.1 tablet (using Java & eclipse RCP).

我希望Windows在文本字段获得焦点时自动打开OSK，并在焦点丢失时再次关闭它.此功能适用于某些内置Windows功能，例如搜索(从屏幕右侧扫入并显示搜索字段)

I would like Windows to automatically open the OSK when a text field receives focus and to close it again when the focus is lost. This works for some of the built-in windows functions such as search (swipe in from the right side of the screen and the search field appears)

我试图以编程方式打开OSK，但无法按预期方式工作. OSK已启动，但在一个窗口中，该窗口将焦点从输入字段移开，因此，键入的字符无法到达输入.

I have tried to open OSK programmatically but it does not work as expected. The OSK is started but in a window which removes the focus from the input field and, therefore, the characters typed to not reach the input.

OSK如下启动

cmd /c c:WINDOWS/system32/osk.exe

也许还有另一种启动方式，以使输入字段不会失去焦点.

Perhaps there is another way to start it so that the input field does not loose focus.

更新

我设法通过编程方式打开了键盘

I managed to open the keyboard programmatically using

Runtime.getRuntime().exec(path + "tabtip.exe")

但仅在之后，我以管理员身份运行该应用程序.为什么我可以从命令行运行tabtip但不能从我的应用程序启动它?

but only after I ran the app as Administrator. Why can I run tabtip from the command line but not start it from my app?

推荐答案

这是我的解决方案，似乎可以正常工作.我曾希望Windows 8能够自动执行此操作，但我找不到办法.

This is my solution which seems to work ok. I had hoped that Windows 8 might be able to do this automatically but I couldn't find a way.

    text.addFocusListener(new FocusListener()
    {
        @Override
        public void focusLost(FocusEvent arg0)
        {
                LogUtil.logInfo("Closing OSK");

                try
                {
                    if(Settings.getBoolean(Settings.OSK_USETABTIP)) {
                        Runtime.getRuntime().exec("cmd /c taskkill /IM tabtip.exe");
                    } else {
                        Runtime.getRuntime().exec("cmd /c taskkill /IM osk.exe");
                    }
                }
                catch (IOException e)
                {
                    LogUtil.logError(e.toString());
                }
        }

        @Override
        public void focusGained(FocusEvent arg0)
        {
            try
            {
                String sysroot = System.getenv("SystemRoot");

                if(Settings.getBoolean(Settings.OSK_USETABTIP)) {
                    LogUtil.logInfo("Opening TabTip");
                    ProcessBuilder pb = new ProcessBuilder("C:/pathtotabtip/tabtip.exe");
                    pb.start();
                } else {
                    LogUtil.logInfo("Opening OSK");
                    ProcessBuilder pb = new ProcessBuilder(sysroot + "/system32/osk.exe");
                    pb.start();
                }
            }
            catch (Exception e)
            {
                LogUtil.logError(e.toString());
            }
        }
    });

注意

taskkill tabtip.exe仅在Windows 8上以管理员身份运行时才有效.通过cmd启动不需要这些特权.为什么 ?！? :-(

taskkill tabtip.exe only works when run as Administrator on Windows 8. Starting via cmd does not need these privileges. Why ?!? :-(

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