Introduction
This article explains how to find and close the window using Win API .
Find and Close the Window
Find the Window
The FindWindow
function retrieves a handle to the top-level window whose class name and window name match the specified strings. This function does not search child windows. This function does not perform a case-sensitive search.
FindWindow(string lpClassName,string lpWindowName)
Finding ClassName and WindowName using Spy++
Spy++ (SPYXX.EXE) is a Win32-based utility that gives you a graphical view of the system's processes, threads, windows, and window messages. With the Window Finder Tool, you can find the properties of a selected window.
Step 1: Arrange your Windows so that Spy++ and the subject window are visible.
Step 2: From the Spy menu, choose Find Window to open the Find Window dialog box.
Step 3: Drag the Finder Tool to the desired window. As you drag the tool, window details display in the dialog box. (Handle, Caption(Window Name), Class Name)
using Microsoft.Win32;
[DllImport("user32.dll")]
public static extern int FindWindow(string lpClassName,string lpWindowName);
[DllImport("user32.dll")]
public static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_CLOSE = 0xF060;
private void closeWindow()
{
int iHandle = FindWindow("Notepad", "Untitled - Notepad");
if (iHandle > 0)
{
SendMessage(iHandle, WM_SYSCOMMAND, SC_CLOSE, 0);
}
}
History
- 19th December, 2007: Initial post
I’m Mohan Kumar from Chennai and hold a Masters Degree in Information Technology. I have worked with Opcion Technologies and Atlas systems in Various Technologies.Currently i'm associated with congnizant Technology Solutions.I am a very good fan of Microsoft Technologies. I love Programming, and I am eager to learn New things Curious about Microsoft Products, Interested in Knowledge sharing.I am glad that I have received couple of awards from community Credit and Dotnetspider for submitting .Net related articles and answers. My famous slogan "Awake! Arise! Stop not till the goal is reached.