dialogtest.java

我用Java编写的一个Demo包括了所Dialog的调用

		fd_savefileButton.right = new FormAttachment(0, 140);
		fd_savefileButton.bottom = new FormAttachment(openfileButton, 22, SWT.TOP);
		fd_savefileButton.top = new FormAttachment(openfileButton, 0, SWT.TOP);
		savefileButton.setLayoutData(fd_savefileButton);
		savefileButton.setText("SaveFile");

		final Button fontButton = new Button(systemdialogGroup, SWT.NONE);
		fontButton.addMouseListener(new MouseAdapter() {
			public void mouseUp(final MouseEvent e) {
				FontDialog fd = new FontDialog(allDialogsTestShell, SWT.NONE);
		        fd.setText("Select Font");
		        fd.setRGB(new RGB(0, 0, 255));
		        FontData defaultFont = new FontData("Courier", 10, SWT.BOLD);
		        fd.setFontData(defaultFont);
		        FontData newFont = fd.open();
		        if (newFont == null)
		          return;
		        showLabel.setFont(new Font(showLabel.getDisplay(), newFont));
		        showLabel.setForeground(new Color(showLabel.getDisplay(), fd.getRGB()));		     
			}
		});
		final FormData fd_fontButton = new FormData();
		fd_fontButton.right = new FormAttachment(0, 200);
		fd_fontButton.top = new FormAttachment(savefileButton, -22, SWT.BOTTOM);
		fd_fontButton.bottom = new FormAttachment(savefileButton, 0, SWT.BOTTOM);
		fd_fontButton.left = new FormAttachment(0, 155);
		fontButton.setLayoutData(fd_fontButton);
		fontButton.setText("Font");

		final Button choosefolderButton = new Button(systemdialogGroup, SWT.NONE);
		choosefolderButton.addMouseListener(new MouseAdapter() {
			public void mouseUp(final MouseEvent e) {
				DirectoryDialog dlg = new DirectoryDialog(allDialogsTestShell);
		        // Set the initial filter path according
		        // to anything they've selected or typed in
		        dlg.setFilterPath("c:/");
		        // Change the title bar text
		        dlg.setText("SWT's DirectoryDialog");
		        // Customizable message displayed in the dialog
		        dlg.setMessage("Select a directory");
		        // Calling open() will open and run the dialog.
		        // It will return the selected directory, or
		        // null if user cancels
		        String dir = dlg.open();
		        if (dir != null) {
		          // Set the text box to the new selection
		        	showLabel.setText(dir); 
		        }
			}
		});
		final FormData fd_choosefolderButton = new FormData();
		fd_choosefolderButton.right = new FormAttachment(0, 90);
		fd_choosefolderButton.top = new FormAttachment(0, 43);
		fd_choosefolderButton.bottom = new FormAttachment(0, 65);
		fd_choosefolderButton.left = new FormAttachment(openfileButton, 0, SWT.LEFT);
		choosefolderButton.setLayoutData(fd_choosefolderButton);
		choosefolderButton.setText("ChooseFolder");

		final Button printButton = new Button(systemdialogGroup, SWT.NONE);
		printButton.addMouseListener(new MouseAdapter() {
			public void mouseUp(final MouseEvent e) {
				PrintDialog printDialog = new PrintDialog(allDialogsTestShell, SWT.NONE);
		        printDialog.setText("Print");
		        PrinterData printerData = printDialog.open();
		        if (!(printerData == null)) {
		          Printer p = new Printer(printerData);
		          p.startJob("PrintJob");
		          p.startPage();
		          Rectangle trim = p.computeTrim(0, 0, 0, 0);
		          Point dpi = p.getDPI();
		          int leftMargin = dpi.x + trim.x;
		          int topMargin = dpi.y / 2 + trim.y;
		          GC gc = new GC(p);
		          Font font = gc.getFont();
		          String printText = showLabel.getText();
		          //Point extent = gc.stringExtent(printText);
		          gc.drawString(printText, leftMargin, topMargin
		              + font.getFontData()[0].getHeight());
		          p.endPage();
		          gc.dispose();
		          p.endJob();
		          p.dispose();
		        }

			}
		});
		final FormData fd_printButton = new FormData();
		fd_printButton.top = new FormAttachment(choosefolderButton, 0, SWT.TOP);
		fd_printButton.right = new FormAttachment(choosefolderButton, 50, SWT.RIGHT);
		fd_printButton.left = new FormAttachment(choosefolderButton, 5, SWT.RIGHT);
		printButton.setLayoutData(fd_printButton);
		printButton.setText("Print");

		final Button colorButton = new Button(systemdialogGroup, SWT.NONE);
		colorButton.addMouseListener(new MouseAdapter() {
			public void mouseUp(final MouseEvent e) {
				ColorDialog cd = new ColorDialog(allDialogsTestShell);
		        cd.setText("ColorDialog Demo");
		        cd.setRGB(new RGB(255, 255, 255));
		        RGB newColor = cd.open();
		        if (newColor == null) {
		          return;
		        }
		        showLabel.setBackground(new Color(showLabel.getDisplay(), newColor));
			}
		});
		final FormData fd_colorButton = new FormData();
		fd_colorButton.left = new FormAttachment(printButton, 5, SWT.RIGHT);
		fd_colorButton.right = new FormAttachment(0, 200);
		fd_colorButton.top = new FormAttachment(printButton, 0, SWT.TOP);
		colorButton.setLayoutData(fd_colorButton);
		colorButton.setText("Color");

		final Button copyfileButton = new Button(allDialogsTestShell, SWT.NONE);
		copyfileButton.addMouseListener(new MouseAdapter() {
			public void mouseUp(final MouseEvent e) {
				try{
					FileDialog fd = new FileDialog(allDialogsTestShell, SWT.OPEN);
			        fd.setText("Open");
			        fd.setFilterPath("C:/");
			        String[] filterExt = { "*.txt", "*.doc", "*.rtf", "*.*" };
			        fd.setFilterExtensions(filterExt);
			        String selectedPath = fd.open();
			        if(selectedPath!=null){
			        	showLabel.setText(selectedPath);
			        }
			        else{		        	
			        	showLabel.setText("return null"); 
			        	return;
			        }
				    FileInputStream in = new FileInputStream(selectedPath);
				    
					FileDialog fd1 = new FileDialog(allDialogsTestShell, SWT.SAVE);
			        fd1.setText("Save");
			        fd1.setFilterPath("C:/");
			        String[] filterExt1 = { "*.txt", "*.doc", "*.rtf", "*.*" };
			        fd1.setFilterExtensions(filterExt1);
			        String savePath = fd1.open();
			        if(savePath!=null){
			        	showLabel.setText(savePath);
			        }
			        else{		        	
			        	showLabel.setText("return null"); 
			        	return;
			        }
				    FileOutputStream out=new FileOutputStream(savePath);
				    byte b[]=new byte[in.available()];
				    in.read(b);
				    out.write(b);
				    in.close();
				    out.close();
				}
			    catch (FileNotFoundException Ee){
			    	showLabel.setText("Read File Error!");				    	
			    }
			    catch(IOException Ee){			    	
			    	showLabel.setText("Read File Error!");
			    }
			    
			}
		});
		final FormData fd_copyfileButton = new FormData();
		fd_copyfileButton.top = new FormAttachment(0, 13);
		fd_copyfileButton.bottom = new FormAttachment(0, 35);
		copyfileButton.setLayoutData(fd_copyfileButton);
		copyfileButton.setText("CopyFile");

		Button listfilesorfoldersButton;
		listfilesorfoldersButton = new Button(allDialogsTestShell, SWT.NONE);
		fd_copyfileButton.left = new FormAttachment(listfilesorfoldersButton, -68, SWT.LEFT);
		fd_copyfileButton.right = new FormAttachment(listfilesorfoldersButton, -5, SWT.LEFT);
		listfilesorfoldersButton.addMouseListener(new MouseAdapter() {
			public void mouseUp(final MouseEvent e) {
				try { 
					DirectoryDialog dlg = new DirectoryDialog(allDialogsTestShell);
			        dlg.setFilterPath(".");
			        dlg.setText("DirectoryDialog");
			        dlg.setMessage("Select a directory");
			        String dir = dlg.open();
			        if (dir != null) {
			        	showLabel.setText(dir); 
			        }
			        else
			        {
			        	return;
			        	
			        }
				    File path = new File(dir); 
				    String[] list; 
				    list = path.list(); 
				    for(int i = 0; i < list.length; i++) 
				    {
					    listfileText.append(list[i]+" - ");
				    }				        
				    } catch(Exception Ee) { 
				        Ee.printStackTrace(); 
				    }
			}
		});
		final FormData fd_listfilesorfoldersButton = new FormData();
		fd_listfilesorfoldersButton.top = new FormAttachment(copyfileButton, -22, SWT.BOTTOM);
		fd_listfilesorfoldersButton.bottom = new FormAttachment(copyfileButton, 0, SWT.BOTTOM);
		fd_listfilesorfoldersButton.left = new FormAttachment(0, 90);
		fd_listfilesorfoldersButton.right = new FormAttachment(0, 210);
		listfilesorfoldersButton.setLayoutData(fd_listfilesorfoldersButton);
		listfilesorfoldersButton.setText("ListFilesOrFolders");

		listfileText = new Text(allDialogsTestShell, SWT.BORDER);
		final FormData fd_listfileText = new FormData();
		fd_listfileText.top = new FormAttachment(0, 325);
		fd_listfileText.right = new FormAttachment(showLabel, 0, SWT.RIGHT);
		fd_listfileText.bottom = new FormAttachment(showLabel, -5, SWT.TOP);
		fd_listfileText.left = new FormAttachment(systemdialogGroup, 0, SWT.LEFT);
		listfileText.setLayoutData(fd_listfileText);

		allDialogsTestShell.layout();
		while (!allDialogsTestShell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
	}

}