SWT调用MediaPlayer.MediaPlayer.1

本文介绍了一个基于Eclipse SWT的简单视频播放器实现。该播放器使用OLE自动化技术调用Windows Media Player来播放视频文件,并提供了基本的菜单功能,如打开文件和退出程序。支持的文件格式包括.wma、.mp3和.wav。

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/** * */ package org.eclipse.swt.snippets; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.ole.win32.OleAutomation; import org.eclipse.swt.ole.win32.OleClientSite; import org.eclipse.swt.ole.win32.OleFrame; import org.eclipse.swt.ole.win32.Variant; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.Shell; /** * @author cuiran * */ public class SWTVideoPlayer { static OleClientSite site; static OleAutomation auto; public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setSize(300,180); shell.setText("SWT Video Player"); shell.setLayout(new FillLayout()); OleFrame frm = new OleFrame(shell, SWT.NONE); site = new OleClientSite(frm, SWT.NONE,"MediaPlayer.MediaPlayer.1"); auto = new OleAutomation(site); int[] ids = auto.getIDsOfNames(new String[] { "Play" }); auto.invoke(ids[0]); addFileMenu(frm); shell.open(); while (!shell.isDisposed()){ if (!display.readAndDispatch()){ display.sleep(); } } site.deactivateInPlaceClient(); site.dispose(); auto.dispose(); } public static void addFileMenu(OleFrame frame) { final Shell shell = frame.getShell(); Menu menuBar = shell.getMenuBar(); if (menuBar == null) { menuBar = new Menu(shell, SWT.BAR); shell.setMenuBar(menuBar); } MenuItem fileMenu = new MenuItem(menuBar, SWT.CASCADE); fileMenu.setText("&File"); Menu menuFile = new Menu(fileMenu); fileMenu.setMenu(menuFile); frame.setFileMenus(new MenuItem[] { fileMenu }); MenuItem menuFileOpen = new MenuItem(menuFile, SWT.CASCADE); menuFileOpen.setText("Open"); menuFileOpen.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { fileOpen(); } }); MenuItem menuFileExit = new MenuItem(menuFile, SWT.CASCADE); menuFileExit.setText("Exit"); menuFileExit.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { shell.dispose(); } }); } public static void fileOpen() { FileDialog dialog = new FileDialog(site.getShell(), SWT.OPEN); dialog.setFilterExtensions(new String[] { "*.wma","*.mp3","*.wav" }); String filename = dialog.open(); if (filename != null) { OleAutomation player = new OleAutomation(site); int playURL[] = player.getIDsOfNames(new String[] { "Open" }); if (playURL != null) { Variant theFile = new Variant(filename); player.invoke(playURL[0],new Variant[] { theFile}); } } } public static void setURL(String fileName){ if (fileName != null) { OleAutomation player = new OleAutomation(site); int playURL[] = player.getIDsOfNames(new String[] { "Open" }); if (playURL != null) { Variant theFile = new Variant(fileName); player.invoke(playURL[0],new Variant[] { theFile}); } } } }

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