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Thursday, November 01, 2007

User32's SetForegroundWindow() API in C#

If there occurs a need to check if some process is already running and then bringing that process' main window in front then .NET does not helps 100%.

Using the System.Diagnositics.Process class to find out a already running process is a easy task but to bring that process' main window in front is a difficult goal.

Here's the code to get the already running process (e.g. Notepad) and then bringing it to front, using the native API from User32.dll >> SetForegroundWindow(int WindowHandle)

[System.Runtime.InteropServices.

class Program
{
static void Main(string[] args)
{
 System.Diagnostics.Process[] p = System.Diagnostics.Process.GetProcessesByName("notepad");
   if (p.Length > 0)
   {
     SetForegroundWindow(p[0].MainWindowHandle);
   }
 }
}

DllImport("user32.dll")]
public static extern bool SetForegroundWindow(IntPtr hWnd);

-Vaibhav Gaikwad

 

 

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