我建立了一个FileDialog
,当用户在其中选择文件后,标签应该更新为所选文件的名称。这是我的代码:
Button buttonSelectFile;
fileFilterPath = "C:/";
Label myDir;
fileSelectionLabel = new Label(container, SWT.None | SWT.WRAP);
fileSelectionLabel.setText("Path to file");
buttonSelectFile = new Button(container, SWT.PUSH);
buttonSelectFile.setText("Select file");
buttonSelectFile.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
Shell shell = new Shell();
FileDialog fileDialog = new FileDialog(shell, SWT.MULTI);
fileDialog.setFilterPath(fileFilterPath);
fileDialog.setFilterExtensions(new String[] { "*.exe" });
fileDialog.setFilterNames(new String[] { "exe-files" });
String files = fileDialog.open();
if (files != null) {
fileFilterPath = fileDialog.getFilterPath();
selectedFile = fileDialog.getFileName();
StringBuffer sb = new StringBuffer(
"Selected file under directory "
+ fileDialog.getFilterPath() + "\n");
sb.append(selectedFile);
}
}
});
myDir = new Label(container, SWT.None);
new Label(container, SWT.None).setText("");
我尝试在handleEvent()
方法中调用myDir.setText(fileFilterPath)
。还尝试调用myDir.layout()
、myDir.refresh()
和myDir.getParent().layout()
。标签没有刷新。
如何刷新标签文本?
container
使用哪种布局? - Baz