C＃SendKeys在發送之前等待程序加載

長期以來，我試圖在計算機啓動時自動執行一些操作。我以爲我會編寫一個C＃控制檯應用程序來執行此操作，然後將其添加到Windows中的計劃任務以在啓動時執行。我的問題是一個程序，它需要一個密碼，並沒有選擇通過命令行打開。因此必須手動輸入。我的想法是從KeePass數據庫中檢索我的密碼，並使用SendKeys輸入密碼並登錄到程序。我遇到的問題是加載所需的時間;我無法檢測GUI界面何時加載並準備好用於SendKeys。有什麼方法可以檢測到這個？我假設我所需要的是「Process」類，因爲那是我用來運行程序的。還要注意，當我使用Process.Start（）運行可執行文件時，程序會創建另一個登錄進程，但它沒有關聯的窗口，我可以使用Windows API調用看到。C＃SendKeys在發送之前等待程序加載

好了，這是很長，我可以重新蓋...

問題：從C＃當第三方程序加載檢測（即啓動畫面消失了，GUI準備用戶交互 - 意義如果Process正在運行，我不能只依靠它）。此外，第三方程序沒有命令行選項，或者我只是將它作爲參數運行密碼。

目標：要使用SendKeys來自動輸入密碼，但我的程序必須等待第三方應用程序完成加載。

注：使用C＃.NET 3.5的控制檯應用程序未檢測出負載爲我自己的形式，而是第三方，否則這將是容易的（即form_loaded事件...）

謝謝你看我的問題，如果你想了解更多細節或任何事情，請告訴我。

UPDATE：

問題解決了！ 我收到的兩個答案合起來給我我想要的解決方案。所以如果任何人稍後會遇到這個問題，這就是我所做的工作。

所以這個程序自動登錄一些你必須登錄的客戶端軟件。我的問題是，該軟件沒有提供許多其他程序提供的命令行參數的選項或文檔，因此您可以使用密鑰文件或其他東西登錄。該程序還禁用了複製和粘貼功能，因此需要手動輸入密碼HAS，如果您像我一樣使用密碼，那麼這是一個很大的麻煩，複雜的密碼無法使用。所以我寫了這個程序，爲了我的利益以及其他人的工作;我只是安排它在登錄到我的Windows機器時運行，它會打開客戶端軟件並自動執行登錄。

// 
// IMPORTANT Windows API imports.... 
// 

[DllImport("user32.dll", SetLastError = true)] 
private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint procId); 

[DllImport("user32.dll", SetLastError = true)] 
private static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); 

[DllImport("user32.dll", SetLastError = true)] 
private static extern bool SetForegroundWindow(IntPtr hWnd); 


// When I get to this point in my code, I already had the password and window title... 
string password = "password"; 
string title = "window title"; 

// This gets a handle to the window I want where "title" is the text in the title 
// bar of the window as a string. 
// This is a Windows API function that must be imported by DLLImport 
// I had to get the handle this way because all I knew about the third party 
// window was the title, not the process name or anything... 
IntPtr hWnd = FindWindowEx(IntPtr.Zero, IntPtr.Zero, null, title); 

// Now that I have a handle to the login window I used another windows API 
// call to get the process ID. 

// This windows API call gives me the Process ID as an out parameter and returns 
// the thread ID of the window. I don't use the thread it, but maybe you can... 
uint loginWindowProcId; 
uint loginWindowThreadId = GetWindowThreadProcessId(hWnd, out loginWindowProcId); 

// now I can just use .NET to find the Process for me... 
Process loginWindowProcess = null; 

if (0 != loginWindowProcId) 
{ 
    // get the process object 
    loginWindowProcess = Process.GetProcessById((int)loginWindowProcId); 

    // This right here is why I wanted the Process structure. It takes a 
    // little while for the client software to load and be ready. So here 
    // you wait for the window to be idle so you know it has loaded and can 
    // receive user input, or in this case keys from "SendKeys". 
    loginWindowProcess.WaitForInputIdle(); 

    // I use yet another windows API call to make sure that the login window 
    // is currently in the foreground. This ensures that the keys are sent 
    // to the right window. Use the handle that we started with. 
    SetForegroundWindow(hWnd); 

    // Now send the password to the window. In my case, the user name is 
    // always there from my windows credentials. So normally I would type in the 
    // password and press ENTER to login. But here I'll use SendKeys to mimic my 
    // behavior. 
    SendKeys.SendWait(password); // send password string 
    SendKeys.SendWait("{ENTER}"); // send ENTER key 

    // Now the client should be logging in for you! :) 

    // IMPORTANT NOTE 
    // If you are using a console application like I am, you must add a reference to 
    // System.Windows.Forms to your project and put "using System.Windows.Forms;" in 
    // your code. This is required to use the "SendKeys" function. 
    // 
    // Also this code is just for my testing (quick and dirty), you will want to write 
    // more checks and catch errors and such. You should probably give the 
    // WaitForInputIdle a timeout etc... 
}

來源

2012-05-22 akagixxer