我有一个控制台应用程序,它应该在MSPaint中绘制一张随机图片(鼠标按下 -> 让光标随机绘制一些东西 -> 鼠标松开)。这是我目前的情况(我为Main
方法添加了注释,以更好地理解我想要实现的内容):
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
public static extern void mouse_event(long dwFlags, uint dx, uint dy, long cButtons, long dwExtraInfo);
private const int MOUSEEVENTF_LEFTDOWN = 0x201;
private const int MOUSEEVENTF_LEFTUP = 0x202;
private const uint MK_LBUTTON = 0x0001;
public delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr parameter);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool EnumChildWindows(IntPtr hwndParent, EnumWindowsProc lpEnumFunc, IntPtr lParam);
static IntPtr childWindow;
private static bool EnumWindow(IntPtr handle, IntPtr pointer)
{
childWindow = handle;
return false;
}
public static void Main(string[] args)
{
OpenPaint(); // Method that opens MSPaint
IntPtr hwndMain = FindWindow("mspaint", null);
IntPtr hwndView = FindWindowEx(hwndMain, IntPtr.Zero, "MSPaintView", null);
// Getting the child windows of MSPaintView because it seems that the class name of the child isn't constant
EnumChildWindows(hwndView, new EnumWindowsProc(EnumWindow), IntPtr.Zero);
Random random = new Random();
Thread.Sleep(500);
// Simulate a left click without releasing it
SendMessage(childWindow, MOUSEEVENTF_LEFTDOWN, new IntPtr(MK_LBUTTON), CreateLParam(random.Next(10, 930), random.Next(150, 880)));
for (int counter = 0; counter < 50; counter++)
{
// Change the cursor position to a random point in the paint area
Cursor.Position = new Point(random.Next(10, 930), random.Next(150, 880));
Thread.Sleep(100);
}
// Release the left click
SendMessage(childWindow, MOUSEEVENTF_LEFTUP, new IntPtr(MK_LBUTTON), CreateLParam(random.Next(10, 930), random.Next(150, 880)));
}
我从这里得到了模拟鼠标点击的代码。
模拟点击操作成功了,但并没有画出任何东西。似乎在MSPaint中无法执行点击操作,光标会变成MSPaint中的“十字架”,但是正如我所提到的……点击似乎不起作用。
FindWindow
将hwndMain
的值设置为0。将参数mspaint
改为MSPaintApp
也没有任何变化,hwndMain
的值仍然是0。
如果有帮助的话,这是我的方法OpenPaint()
:
private static void OpenPaint()
{
Process.process = new Process();
process.StartInfo.FileName = "mspaint.exe";
process.StartInfo.WindowStyle = "ProcessWindowStyle.Maximized;
process.Start();
}
我做错了什么?