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03-29 00:00

sendmessage in C#

Programming/C# / 2010. 12. 27. 01:42
1         [DllImport("user32.dll", SetLastError = true)]  
2         static extern IntPtr FindWindow(string lpClassName, string lpWindowName);  
3  
4         [DllImport("user32.dll", SetLastError = true)]  
5         static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);  
6  
7         [DllImport("user32.dll")]  
8         private static extern bool PostMessage(IntPtr hWnd, UInt32 Msg, Int32 wParam, Int32 lParam);  
9  
10         static void Main(string[] args)  
11         {  
12             // Use this to send key strokes  
13             const int WM_KEYDOWN = 0x100;  
14             IntPtr windowHandle = FindWindow("NOTEPAD"null);  
15             IntPtr editHandle = FindWindowEx(windowHandle, IntPtr.Zero, "EDIT"null);  
16             PostMessage(editHandle, WM_KEYDOWN, 'A', 0);  
17             Console.ReadKey();  
18         }

1         [DllImport("user32.dll")]  
2         public static extern int SendMessage(int hWnd, int msg, int wParam, [MarshalAs(UnmanagedType.LPStr)] string lParam);  
3  
4         [DllImport("user32.dll", SetLastError = true)]  
5         static extern IntPtr FindWindow(string lpClassName, string lpWindowName);  
6  
7         [DllImport("user32.dll", SetLastError = true)]  
8         static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);  
9  
10         static void Main(string[] args)  
11         {  
12             const int WM_SETTEXT = 0x0C;  
13  
14             IntPtr windowHandle = FindWindow("NOTEPAD"null);  
15             IntPtr editHandle = FindWindowEx(windowHandle, IntPtr.Zero, "EDIT"null);  
16             string textToSendToFile = "Input here your text";  
17             SendMessage((int)editHandle, WM_SETTEXT, 0, textToSendToFile);  
18  
19             Console.ReadKey();  
20         }


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