我正在尝试在创建两个 ScrolledComposites上方添加一个按钮,它们从swt 片段中滚动串联片段
问题是,如果我将示例代码放在与外壳不同的 Composite 中,则示例不起作用
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class tandemWithButton {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new RowLayout());
Button buttonAbove = new Button(shell, SWT.PUSH);
buttonAbove.setText("Button Above");
buttonAbove.setSize(40, 30);
// shell.setContent (buttonAbove);
Composite comp = new Composite(shell, SWT.NONE);
comp.setLayout(new FillLayout());
final ScrolledComposite sc1 = new ScrolledComposite(comp, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
Button button1 = new Button(sc1, SWT.PUSH);
button1.setText("Button 1");
button1.setSize(400, 300);
sc1.setContent(button1);
final ScrolledComposite sc2 = new ScrolledComposite(comp, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
Button button2 = new Button(sc2, SWT.PUSH);
button2.setText("Button 2");
button2.setSize(300, 400);
sc2.setContent(button2);
final ScrollBar vBar1 = sc1.getVerticalBar();
final ScrollBar vBar2 = sc2.getVerticalBar();
final ScrollBar hBar1 = sc1.getHorizontalBar();
final ScrollBar hBar2 = sc2.getHorizontalBar();
SelectionListener listener1 = new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
int x = hBar1.getSelection() * (hBar2.getMaximum() - hBar2.getThumb()) / Math.max(1, hBar1.getMaximum() - hBar1.getThumb());
int y = vBar1.getSelection() * (vBar2.getMaximum() - vBar2.getThumb()) / Math.max(1, vBar1.getMaximum() - vBar1.getThumb());
sc2.setOrigin(x, y);
}
};
SelectionListener listener2 = new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
int x = hBar2.getSelection() * (hBar1.getMaximum() - hBar1.getThumb()) / Math.max(1, hBar2.getMaximum() - hBar2.getThumb());
int y = vBar2.getSelection() * (vBar1.getMaximum() - vBar1.getThumb()) / Math.max(1, vBar2.getMaximum() - vBar2.getThumb());
sc1.setOrigin(x, y);
}
};
vBar1.addSelectionListener(listener1);
hBar1.addSelectionListener(listener1);
vBar2.addSelectionListener(listener2);
hBar2.addSelectionListener(listener2);
comp.pack();
comp.setSize(400, 300);
shell.setSize(400, 300);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
有人可以帮我理解我做错了什么吗?如何将串联滚动条放在复合材料中并在其上方/下方添加小部件。在此先感谢,约西