Java 如何使用JNA运行chrome？

我写了一些java代码

如何在windows（32位）中使用JNA运行chrome

那我想知道它的名字

正如你们所知，FindWindow是一个简单的解决方案，但若chrome不运行，它就不能工作

下面类似的代码是可能的吗

HWND hwnd = User32.CreateProcess(...);

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下面代码打开chrome。 但是尺寸、最大化不起作用

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当然，如果Chrome没有运行，你就无法获得它的窗口句柄，因为这样的窗口并不存在。您可能希望使用ProcessBuilder之类的工具运行Chrome，然后调用以下命令：

user32.EnumWindows( new WndEnumProc()
{

    @SuppressWarnings ( "AssignmentToMethodParameter" )
    public boolean callback ( int hWnd, int lParam )
    {
        if ( user32.IsWindow( hWnd ) )
        {
            if ( user32.IsWindowVisible( hWnd ) )
            {
                RECT r = new RECT();
                user32.GetWindowRect( hWnd, r );
                // if (r.left > -32000) // is not minimized
                //{
                String windowTitle = getWindowParentName( hWnd );
                String windowClass = getWindowParentClassName( hWnd );
                hWnd = user32.GetAncestor( hWnd, 3 );
                if ( !windowTitle.toLowerCase().equals( "program manager" ) && !windowClass.toLowerCase().equals( "progman" ) && !windowTitle.equals( "" ) && !windowClass.toLowerCase().equals( "shell_traywnd" ) )
                {
                    listOfWindows.put( hWnd, getWindowParentRectangle( hWnd ) );
                }
                // }
            }
            return true;
        }
        else
        {
            return false;
        }
    }
}, 0 );

当然，这已经是工作代码，有一些特定于我的应用程序的条件。但主要的想法是 使用WndEnumProc（）调用EnumWindows，该函数将把它找到的所有窗口放入一个集合（在我的例子中是一个HashMap）。然后，在EnumWindows返回后，在listOfWindows变量中会有一组窗口，如果Chrome在调用EnumWindows期间运行，则可以获取hwnd

您应该在user32实例中定义EnumWindows，如下所示：

/**
 * Enumerates all top-level windows on the screen by passing the handle to each window, in turn, to an application-defined callback function.
 * @param wndenumproc A pointer to an application-defined callback function.
 * @param lParam An application-defined value to be passed to the callback function.
 * @return if the function succeeded.
 * <a href="http://msdn.microsoft.com/en-us/library/ms633497(v=VS.85).aspx"> <b>Microsoft Reference</b></a><br>
 */
public boolean EnumWindows ( WndEnumProc wndenumproc, int lParam );

  public static interface WndEnumProc extends StdCallLibrary.StdCallCallback
    {

        boolean callback ( int hWnd, int lParam );
    }

希望有帮助。请注意，Chrome必须运行，而你正在做所有的魔术。正如我在一开始提到的，使用ProcessBuilder运行它应该相对简单，或者如果您不想太麻烦，而且Chrome在您的道路上，您可以使用

System.getRuntime（）.exec（“chrome.exe”）

启动Chrome

public class Test {
    public static void main(String[] args) {

        int STARTF_USEPOSITION = 0x00000004;
        int STARTF_USESIZE = 0x00000002;
        int STARTF_USESHOWWINDOW = 0x00000001;

        ProcessInformation processInformation = new ProcessInformation();
        StartupInfoA startupInfo = new StartupInfoA();
        startupInfo.dwX = 100;
        startupInfo.dwY = 100;
        startupInfo.dwXSize = 100;
        startupInfo.dwYSize = 100;    
        startupInfo.wShowWindow = (short) SW_MAXIMIZE;
        startupInfo.dwFlags = STARTF_USEPOSITION | STARTF_USESIZE;

        Kernel32.INSTANCE.CreateProcessA(new String("C:\\Users.....\\Google\\Chrome\\Application\\chrome.exe")
                , null
                , null
                , null
                , true
                , 0
                , null
                , null
                , startupInfo
                , processInformation);
    }
}

user32.EnumWindows( new WndEnumProc()
{

    @SuppressWarnings ( "AssignmentToMethodParameter" )
    public boolean callback ( int hWnd, int lParam )
    {
        if ( user32.IsWindow( hWnd ) )
        {
            if ( user32.IsWindowVisible( hWnd ) )
            {
                RECT r = new RECT();
                user32.GetWindowRect( hWnd, r );
                // if (r.left > -32000) // is not minimized
                //{
                String windowTitle = getWindowParentName( hWnd );
                String windowClass = getWindowParentClassName( hWnd );
                hWnd = user32.GetAncestor( hWnd, 3 );
                if ( !windowTitle.toLowerCase().equals( "program manager" ) && !windowClass.toLowerCase().equals( "progman" ) && !windowTitle.equals( "" ) && !windowClass.toLowerCase().equals( "shell_traywnd" ) )
                {
                    listOfWindows.put( hWnd, getWindowParentRectangle( hWnd ) );
                }
                // }
            }
            return true;
        }
        else
        {
            return false;
        }
    }
}, 0 );

/**
 * Enumerates all top-level windows on the screen by passing the handle to each window, in turn, to an application-defined callback function.
 * @param wndenumproc A pointer to an application-defined callback function.
 * @param lParam An application-defined value to be passed to the callback function.
 * @return if the function succeeded.
 * <a href="http://msdn.microsoft.com/en-us/library/ms633497(v=VS.85).aspx"> <b>Microsoft Reference</b></a><br>
 */
public boolean EnumWindows ( WndEnumProc wndenumproc, int lParam );

  public static interface WndEnumProc extends StdCallLibrary.StdCallCallback
    {

        boolean callback ( int hWnd, int lParam );
    }