How do I swap two application windows

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I want to swap applications suppose I have create two process using

Process pro1 = run.exec("C:\\Windows\\System32\\notepad.exe");
Process pro2 = run.exec("C:\\Windows\\System32\\calc.exe");

Recent application will have focus, Simply I want to change focus of windows from calc.exe to the notepad.exe.

Thanks in Advance to solve my trouble.

Posted 8-Feb-14 20:07pm

Nei Sa

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Abhinav S · Answer 1 · 2014-02-08T20:09:00

Solution 1

Using DLL import -

C#

[DllImport("user32.dll")]
static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);


void ActivateProcess(int PID)
{
    Process proc = Process.GetProcessById(PID);
    IntPtr mainWindow = proc.MainWindowHandle;
    ShowWindow(mainWindow, 5);  // 5 == SW_SHOW
 }

Posted 8-Feb-14 20:09pm

Abhinav S

Comments

Nei Sa 11-Mar-14 9:37am

@Abhinav Thanks for your positive response..

I have tried to use ShowWindow() but It doesn't supports the HInstance type it can support only hwnd type...

Nei Sa · Answer 2 · 2014-03-22T02:38:00

Solution 2

C#

window = user32.FindWindow("notepad", null);
user32.SwitchToThisWindow(window,true);

Posted 22-Mar-14 2:38am

Nei Sa