C#如何调用API查找窗体并关闭找到的窗体

Question

如题，只知道这个窗体是其他软件系统抛出的错误的窗体，现在我的工具要实现找到该窗体后关闭它
窗体上显示的名字比如是HuangHePower
第一次接触调用API函数的东西，大家给个例子学习下
主要是如何找到该窗体，然后程序能够关闭找到的窗体

Answer 1

先找到,然后关    public const int WM_CLOSE = 0x10;    [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SendMessageA")]
    public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
    private void button1_Click(object sender, System.EventArgs e)
    {
        IntPtr hwnd_win;        hwnd_win = FindWindow(null, "要找的窗体名");
        SendMessage(hwnd_win, WM_CLOSE, 0, 0);
    }

Answer 2

//查找窗体
        [DllImport("User32.dll", EntryPoint = "FindWindow")]
        private static extern int FindWindow(string lpClassName, string lpWindowName);
        static void Main()
        {             //@Form1根据窗体的Text文本值获得窗体
                int WINDOW_HANDLER = FindWindow(null, @"Form1");
         }

Answer 3

利用2楼的方法测试一个记事本窗口可以关闭
想问下的是那个WM_CLOSE的定义是什么意思？

Answer 4

    public const int WM_CLOSE = 0x10;    [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SendMessageA")]
    public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
    private void button1_Click(object sender, System.EventArgs e)
    {
        IntPtr hwnd_win;        hwnd_win = FindWindow(null, "要找的窗体名");
        SendMessage(hwnd_win, WM_CLOSE, 0, 0);
    }2楼这段测试可行，搂主可以直接用。

Answer 5

 
//获取应用程序名称
        public List<string> GetRunApplicationList(Form appForm)
        {
            List<string> appString = new List<string>();
            try
            {
                int handle = (int)appForm.Handle;
                int hwCurr;
                hwCurr = GetWindow(handle, GW_HWNDFIRST);
                while (hwCurr > 0)
                {
                    int isTask = (WS_VISIBLE | WS_BORDER);
                    int lngStyle = GetWindowLongA(hwCurr, GWL_STYLE);
                    bool taskWindow = ((lngStyle & isTask) == isTask);
                    if (taskWindow)
                    {
                        int length = GetWindowTextLength(new IntPtr(hwCurr));
                        StringBuilder sb = new StringBuilder(2 * length + 1);
                        GetWindowText(hwCurr, sb, sb.Capacity);
                        string strTitle = sb.ToString();
                        if (!string.IsNullOrEmpty(strTitle))
                        {
                            appString.Add(strTitle);
                        }
                    }
                    hwCurr = GetWindow(hwCurr, GW_HWNDNEXT);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("读取应用程序信息时出错：" + ex.Message);
            }
            return appString;
        }调用List<string> list=GetRunApplicationList(this);
foreach(string var in list)
{
if(var=="HuangHePower")
......
}应该可以的。

Answer 6

 //关闭不信任的应用程序，如我的电脑，网上邻居
                                            try
                        {
                            IntPtr findPtr = FindWindow(null, "HuangHePower");
                            PostMessage(findPtr, WM_CLOSE, 0, 0);
                        }
                        catch
                        {
                        }