Question

在我的SWT应用程序中，我使用SWT文本在基于shell的结构中输入项目编号。源代码存在here。

我希望没什么特别的：

inputNumber = new Text(group, SWT.SINGLE | SWT.BORDER);

    // platform independent key handling for ENTER, TAB, ...
    // TODO change bad listener with a better one
    inputNumber.addListener(SWT.Traverse, event -> {
        if (!inputNumber.getText().trim().equals("")) {
            if ((event.stateMask & SWT.SHIFT) == SWT.SHIFT && event.detail == SWT.TRAVERSE_RETURN) {
                actionBtnOkAndExit();
            } else if (event.detail == SWT.TRAVERSE_RETURN) {
                actionBtnOk();
            }
        }
    });

当用户填写插入符号（在mac？上）'^'并且我点击转义符来关闭shell时，JVM崩溃时出现以下错误消息。使用留在其上的退格键''的键可以完成相同的操作。

2017-10-11 22:35:44.704 java[9862:954273] *** WARNING: Method userSpaceScaleFactor in class NSWindow is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead. 
2017-10-11 22:35:44.709 java[9862:954273] *** WARNING: Method userSpaceScaleFactor 
in class NSView is deprecated on 10.7 and later. It should not be used in new 
applications. Use convertRectToBacking: instead. 
Exception in thread "main" org.eclipse.swt.SWTException: Widget is disposed
at org.eclipse.swt.SWT.error(Unknown Source)
at org.eclipse.swt.SWT.error(Unknown Source)
at org.eclipse.swt.SWT.error(Unknown Source)
at org.eclipse.swt.widgets.Widget.error(Unknown Source)
at org.eclipse.swt.widgets.Widget.checkWidget(Unknown Source)
at org.eclipse.swt.widgets.Control.getShell(Unknown Source)
at org.eclipse.swt.widgets.Control.traversalCode(Unknown Source)
at org.eclipse.swt.widgets.Text.traversalCode(Unknown Source)
at org.eclipse.swt.widgets.Control.translateTraversal(Unknown Source)
at org.eclipse.swt.widgets.Control.keyDown(Unknown Source)
at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Unknown Source)
at org.eclipse.swt.widgets.Widget.windowSendEvent(Unknown Source)
at org.eclipse.swt.widgets.Shell.windowSendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Display.applicationSendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.applicationProc(Unknown Source)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at de.ryanthara.ja.rycon.ui.MainApplication.initUI(MainApplication.java:687)
at de.ryanthara.ja.rycon.ui.MainApplication.<init>(MainApplication.java:94)
at de.ryanthara.ja.rycon.ui.MainApplication.main(MainApplication.java:137)

Process finished with exit code 1

是否有人知道我的代码中缺少什么或这里出了什么问题？

从我的来源减少了最少的代码：

    import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class MinimumText {

    public MinimumText(final Shell parent) {
        GridLayout gridLayout = new GridLayout(1, true);

        Shell innerShell = new Shell(parent, SWT.CLOSE | SWT.DIALOG_TRIM | SWT.MAX | SWT.TITLE | SWT.APPLICATION_MODAL);
        innerShell.setSize(600, 400);
        innerShell.setLayout(gridLayout);

        new Text(innerShell, SWT.SINGLE | SWT.BORDER);

        innerShell.setLocation(200, 100);

        innerShell.open();
    }

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new GridLayout(1, false));

        new MinimumText(shell);

        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }

        display.dispose();
    }
}

在按下转义键之前，文本字段会以这种方式显示。

最小例子的屏幕截图就是这样的。点击转义键时的行为相同。

当swt文本包含插入符时，SWT应用程序崩溃

0 个答案: