[英]ScrolledComposite wont display in TabFolder
我很難找到一個示例,其中滾動條在TabFolder內按預期工作。 下面是示例代碼。 誰能告訴我我做錯了什么,或者這是一個錯誤?
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.eclipse.swt.widgets.Text;
public class Test {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display, SWT.SHELL_TRIM);
shell.setLayout(new GridLayout(1, false));
TabFolder tabFolder = new TabFolder(shell, SWT.NULL);
TabItem tab = new TabItem(tabFolder, SWT.NULL);
ScrolledComposite scrolledComposite = new ScrolledComposite(tabFolder,
SWT.H_SCROLL | SWT.V_SCROLL);
scrolledComposite.setExpandHorizontal(true);
scrolledComposite.setExpandVertical(true);
scrolledComposite.setLayout(new GridLayout(1, false));
scrolledComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL,
true, true));
Composite innerComposite = new Composite(scrolledComposite, SWT.NULL);
for (int x = 0; x < 20; x++) {
Text t = new Text(innerComposite, SWT.BORDER);
t.setText(x + "");
}
innerComposite.setLayout(new GridLayout(2, false));
innerComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true,
true));
scrolledComposite.setContent(innerComposite);
scrolledComposite.setMinSize(scrolledComposite.computeSize(SWT.DEFAULT,
SWT.DEFAULT));
tab.setControl(scrolledComposite);
shell.setSize(100, 100);
shell.open();
while (!shell.isDisposed()) {
if (!shell.getDisplay().readAndDispatch()) {
shell.getDisplay().sleep();
}
}
display.dispose();
}
}
這有很多問題。 查看代碼中的注釋:
TabFolder tabFolder = new TabFolder(shell, SWT.NULL);
// Must set layout data for Shell GridLayout
tabFolder.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
TabItem tab = new TabItem(tabFolder, SWT.NULL);
ScrolledComposite scrolledComposite = new ScrolledComposite(tabFolder, SWT.H_SCROLL | SWT.V_SCROLL);
scrolledComposite.setExpandHorizontal(true);
scrolledComposite.setExpandVertical(true);
// ScrolledComposite ignores setLayout
// scrolledComposite.setLayout(new GridLayout(1, false));
// TabFolder doesn't use GridData
// scrolledComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
Composite innerComposite = new Composite(scrolledComposite, SWT.NULL);
for (int x = 0; x < 20; x++) {
final Text t = new Text(innerComposite, SWT.BORDER);
t.setText(x + "");
}
innerComposite.setLayout(new GridLayout(2, false));
innerComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
scrolledComposite.setContent(innerComposite);
// MinSize should be the computed size of the inner composite
scrolledComposite.setMinSize(innerComposite.computeSize(SWT.DEFAULT, SWT.DEFAULT));
tab.setControl(scrolledComposite);
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