我是SWT的新手。
这是显示进度条的代码。点击“取消”按钮我的应用程序中的按钮，应该运行进度条。它正在工作..工作之后它也只是显示..如何在工作后杀死它？
public static void Pv7(Button ok, Shell shell2)
{
shell=shell2;
final ProgressBar pb3 = new ProgressBar(shell, SWT.SMOOTH);
shell.setLayout(new RowLayout());
shell.setSize(1500, 1000);
pb3.setSelection(500);
pb3.setBounds(100, 40, 200, 20);
Label label3 = new Label(shell, SWT.NULL);
//label2.setText("Success");
label3.setAlignment(SWT.LEFT);
label3.setBounds(10, 40, 80, 20);
}
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My code is displaying the progress after the process also. How to dispose the progress bar the after the another shell window opened??
This is my main program:
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class Practice1
{
static Text text = null;
final static Shell shell = null;
public static void main (String [] args)
{
final Display display =new Display();
final Shell shell=new Shell(display);
RowLayout rowLayout = new RowLayout();
shell.setLayout(rowLayout);
shell.setLocation(-1,-7);
shell.setBounds(0, 0, 1050, 720);
Label label = new Label (shell, SWT.NONE);
label.setText ("Enter the text:");
text = new Text (shell, SWT.BORDER);
final Button ok = new Button (shell, SWT.PUSH);
ok.setText ("OK");
ok.addSelectionListener(new SelectionAdapter()
{
@Override
public void widgetSelected(SelectionEvent e)
{
PV6.Pv6(ok,shell);
}
});
Button cancel = new Button (shell, SWT.PUSH);
cancel.setText ("Cancel");
cancel.addSelectionListener(new SelectionAdapter()
{
@Override
public void widgetSelected(SelectionEvent e)
{
System.out.println("Cancel");
System.out.println("User cancelled dialog");
shell.setVisible(false);
}
});
shell.addListener(SWT.Close, new Listener()
{
public void handleEvent(Event event)
{
int style = SWT.APPLICATION_MODAL | SWT.YES | SWT.NO;
MessageBox messageBox = new MessageBox(shell, style);
messageBox.setText("Information");
messageBox.setMessage("Close the shell?");
event.doit = messageBox.open() == SWT.YES;
}
});
shell.setDefaultButton (cancel);
/*print the ID in the console area**/
ok.addSelectionListener(new SelectionAdapter()
{
@Override
public void widgetSelected(SelectionEvent e)
{
System.out.println(text.getText());
}
});
//Creating another shell
ok.addSelectionListener (new SelectionAdapter ()
{
@Override
public void widgetSelected (SelectionEvent e)
{
System.out.println(text.getText());
final Shell dialog = new Shell (shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
dialog.setText("Dialog Shell");
dialog.setBounds(50,100, 10, 10);
FormLayout formLayout = new FormLayout ();
formLayout.marginWidth = 10;
formLayout.marginHeight = 10;
dialog.setLayout (formLayout);
Label label = new Label (dialog, SWT.NONE);
label.setText ("Type a Name:");
FormData data = new FormData ();
label.setLayoutData (data);
Button cancel = new Button (dialog, SWT.PUSH);
cancel.setText ("Cancel");
data = new FormData ();
data.width = 60;
data.right = new FormAttachment (100, 0);
data.bottom = new FormAttachment (100, 0);
cancel.setLayoutData (data);
cancel.addSelectionListener (new SelectionAdapter ()
{
@Override
public void widgetSelected (SelectionEvent e)
{
System.out.println("User cancelled dialog");
dialog.close ();
}
});
text = new Text (dialog, SWT.BORDER);
data = new FormData ();
data.width = 200;
data.left = new FormAttachment (label, 0, SWT.DEFAULT);
data.right = new FormAttachment (100, 0);
data.top = new FormAttachment (label, 0, SWT.CENTER);
data.bottom = new FormAttachment (cancel, 0, SWT.DEFAULT);
text.setLayoutData (data);
final Button ok = new Button (dialog, SWT.PUSH);
ok.setText ("OK");
data = new FormData ();
data.width = 60;
data.right = new FormAttachment (cancel, 0, SWT.DEFAULT);
data.bottom = new FormAttachment (100, 0);
ok.setLayoutData (data);
ok.addSelectionListener (new SelectionAdapter ()
{
@Override
public void widgetSelected (SelectionEvent e)
{
System.out.println (" " + text.getText ());
PV6.Pv6(ok,shell);
// dialog.close ();
}
});
//Creating another shell
ok.addSelectionListener (new SelectionAdapter ()
{
@Override
public void widgetSelected (SelectionEvent e)
{
//PV6.Pv6(ok,shell);
System.out.println(text.getText());
final Shell dialog = new Shell (shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
dialog.setText("Dialog Shell");
FormLayout formLayout = new FormLayout ();
formLayout.marginWidth = 50;
formLayout.marginHeight = 10;
formLayout.spacing = 100;
dialog.setLayout (formLayout);
Label label = new Label (dialog, SWT.NONE);
label.setText ("Type a Name:");
FormData data = new FormData ();
label.setLayoutData (data);
Button cancel = new Button (dialog, SWT.PUSH);
cancel.setText ("Cancel");
data = new FormData ();
data.width = 60;
data.right = new FormAttachment (100, 0);
data.bottom = new FormAttachment (100, 0);
cancel.setLayoutData (data);
cancel.addSelectionListener (new SelectionAdapter ()
{
@Override
public void widgetSelected (SelectionEvent e)
{
System.out.println("User cancelled dialog");
dialog.close ();
}
});
text = new Text (dialog, SWT.BORDER);
data = new FormData ();
data.width = 200;
data.left = new FormAttachment (label, 0, SWT.DEFAULT);
data.right = new FormAttachment (100, 0);
data.top = new FormAttachment (label, 0, SWT.CENTER);
data.bottom = new FormAttachment (cancel, 0, SWT.DEFAULT);
text.setLayoutData (data);
final Button ok = new Button (dialog, SWT.PUSH);
ok.setText ("OK");
data = new FormData ();
data.width = 60;
data.right = new FormAttachment (cancel, 0, SWT.DEFAULT);
data.bottom = new FormAttachment (100, 0);
ok.setLayoutData (data);
ok.addSelectionListener (new SelectionAdapter ()
{
@Override
public void widgetSelected (SelectionEvent e)
{
System.out.println ("User typed: " + text.getText ());
PV6.Pv6(ok,shell);
// dialog.close ();
}
}); dialog.setDefaultButton (ok);
dialog.pack ();
dialog.open ();
}
});
dialog.setDefaultButton (ok);
dialog.pack ();
dialog.open ();
// Move the dialog to the center of the top level shell.
Rectangle shellBounds = shell.getBounds();
Point dialogSize = dialog.getSize();
//shell.setBounds(0, 0, 1050, 720);
dialog.setLocation(
shellBounds.x + (shellBounds.width - dialogSize.x) / 2,
shellBounds.y + (shellBounds.height - dialogSize.y) / 2);
}
});
shell.pack ();
shell.open ();
while (!shell.isDisposed ())
{
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
Any one help me for dispose the progress bar??
答案 0 :(得分：0)
我仍然不能说我完全理解你的问题。我不知道你何时想要处理ProgressBar，但我只是解释你怎么做，然后你决定何时调用该方法：
private static Shell shell;
private static ProgressBar bar;
public static void Pv7(Button ok, Shell shell2)
{
shell=shell2;
if(bar != null && !bar.isDisposed())
bar.dispose();
bar = new ProgressBar(shell, SWT.SMOOTH);
shell.setLayout(new RowLayout());
shell.setSize(1500, 1000);
pb3.setSelection(500);
Label label3 = new Label(shell, SWT.NULL);
label3.setAlignment(SWT.LEFT);
}
public static void disposeProgressBar()
{
if(bar != null && !bar.idDisposed())
bar.dispose();
}
然后，当您希望处理disposeProgressBar()时，只需致电ProgressBar。