1、實(shí)戰(zhàn)SWT之FormLayout/分割窗口/菜單/狀態(tài)欄(2006-11-03 08:51:37) 轉(zhuǎn)載  分類：IT技術(shù)為了編寫(xiě)桌面應(yīng)用程序，因?yàn)橛肑AVA來(lái)寫(xiě)，SWT是一個(gè)非常好的工具包，近來(lái)有使用了一個(gè)很好的布局FormLayout，它是用控件的四個(gè)頂點(diǎn)的位置來(lái)定位一個(gè)控件及它的大小的。下面的抓圖是我布局好的一個(gè)符合窗口，大家一定見(jiàn)慣了這樣的窗口。窗口最上方的是菜單Menu，沒(méi)有寫(xiě)子菜單；中間部分是一個(gè)分割窗口SashForm，分割窗口的左邊是一棵樹(shù)Tree，右邊是一個(gè)標(biāo)簽頁(yè)TabFolder；最下面的是一個(gè)狀態(tài)欄CoolBar。窗口的布局與界面顯示完全是WINDOWS的風(fēng)格，

2、不需要自己動(dòng)手寫(xiě)代碼來(lái)實(shí)現(xiàn)復(fù)雜的界面布局。下面是源代碼。package test.base;import org.eclipse.swt.layout.FormAttachment;import org.eclipse.swt.layout.FormData;import org.eclipse.swt.graphics.Color;import org.eclipse.swt.graphics.Point;import org.eclipse.swt.widgets.Shell;import org.eclipse.swt.widgets.TabFolder;import org.eclip

3、se.swt.SWT;import org.eclipse.swt.layout.FormLayout;import org.eclipse.swt.widgets.Display;import org.eclipse.swt.widgets.Label;import org.eclipse.swt.widgets.TabItem;import org.eclipse.swt.widgets.Menu;import org.eclipse.swt.widgets.MenuItem;import org.eclipse.swt.widgets.CoolBar;import org.eclipse

4、.swt.widgets.TreeItem;import org.eclipse.swt.custom.SashForm;import org.eclipse.swt.widgets.Tree;public class TestView private Shell sShell = null; / jve:decl-index=0:visual-constraint="10,10"private Menu menuBar = null;private CoolBar coolBar = null;private SashForm sashForm = null;privat

5、e TabFolder tabFolder = null;private Tree tree = null;private void createSShell() sShell = new Shell();sShell.setText("Shell");createCoolBar();createSashForm();sShell.setSize(new Point(300, 200);sShell.setLayout(new FormLayout();menuBar = new Menu(sShell, SWT.BAR);createMenuBar();sShell.se

6、tMenuBar(menuBar);private void createMenuBar() MenuItem push = new MenuItem(menuBar, SWT.PUSH);push.setText("文件");MenuItem push1 = new MenuItem(menuBar, SWT.PUSH);push1.setText("編輯");MenuItem push2 = new MenuItem(menuBar, SWT.PUSH);push2.setText("窗口");MenuItem push3 = n

7、ew MenuItem(menuBar, SWT.PUSH);push3.setText("幫助");private void createCoolBar() coolBar = new CoolBar(sShell, SWT.NONE);FormData formData = new FormData();formData.left = new FormAttachment(00, 0);formData.right = new FormAttachment(100, -0);formData.top = new FormAttachment(100, -24);form

8、Data.bottom = new FormAttachment(100, 0);coolBar.setLayoutData(formData);Color color = new Color(Display.getCurrent(), 0,0,0);coolBar.setBackground(color);private void createSashForm() sashForm = new SashForm(sShell, SWT.NONE);FormData formData = new FormData();formData.left = new FormAttachment(0,

9、3);formData.right = new FormAttachment(100, -3);formData.top = new FormAttachment(0, 0);formData.bottom = new FormAttachment(100, -25);sashForm.setLayoutData(formData);tree = new Tree(sashForm, SWT.NONE);createTree();createTabFolder();sashForm.setWeights(new int 1, 3);private void createTree() TreeI

10、tem treeItem = new TreeItem(tree, SWT.NONE);treeItem.setText("根結(jié)點(diǎn)");private void createTabFolder() tabFolder = new TabFolder(sashForm, SWT.NONE);TabItem tabItem = new TabItem(tabFolder, SWT.NONE);tabItem.setText("屬性標(biāo)簽");Label label = new Label(tabFolder, SWT.NONE);label.setText(&

11、quot;文字標(biāo)簽");tabItem.setControl(label);formData.left = new FormAttachment(0, 3);第一個(gè)參數(shù)0表示父控件寬度的0%，第二個(gè)參數(shù)3表示離左邊的距離為3pix。這樣一來(lái)左邊位置就是(width*0%+3)。formData.right = new FormAttachment(100, -3);第一個(gè)參數(shù)100表示父寬度的100%，第二個(gè)參數(shù)-3表示離左邊的距離為-3pix。這樣一來(lái)右邊位置就是(width*100%-3)。formData.top = new FormAttachment(0, 0);第一個(gè)參數(shù)0表示父控件高度的0%，第二個(gè)參