EclipseRCP:是否可以在不重绘的情况下向上移动字段?

是的,打电话 layout (true) 在父母身上。

例如,我有一个视图,在顶部有一个搜索栏,可以切换谁的可见性。我有一个创建搜索组合的方法和一个删除它的方法:

private void createNameSearchBar () {
    mySearchControl = new CardSearchControl (myViewComposite, SWT.NONE);
    mySearchControl.setSearchListener (this);
}


private void disposeNameSearchBar () {
    mySearchControl.dispose ();
    mySearchControl = null;
}

private CardSearchControl mySearchControl = null;
private Composite myViewComposite;
private boolean mySearchBarState;

要隐藏或显示搜索栏控件,我调用此方法(myViewComposite是拥有搜索栏和所有其他控件的顶级控件):

public void setSearchBarState (boolean show)  {
    mySearchBarState = show;

    if (myViewComposite == null  ||  myViewComposite.isDisposed ())
        return; // no work to do

    if (mySearchBarState  &&  mySearchControl == null)  {
        createNameSearchBar ();
        mySearchControl.moveAbove (null);
        myViewComposite.layout (true);
    }  else if (!mySearchBarState  &&  mySearchControl != null)  {
        disposeNameSearchBar ();
        myViewComposite.layout (true);
    }
}