Let className = StringBuilder 256 let length = GetClassName(hwnd, className, className.Capacity) Let WM_GETTEXT = 0x000D let WM_GETTEXTLENGTH = 0x000E for i in 1. extern int SendMessage(nativeint hwnd, int msg, nativeint wparam, StringBuilder lparam) extern int GetWindowText(nativeint hwnd, StringBuilder titleName, int maxCount) extern int GetClassName(nativeint hwnd, StringBuilder className, int maxCount) extern bool EnumChildWindows(nativeint hwnd, EnumWindowsProc func, nativeint lparam) Type EnumWindowsProc= delegate of nativeint * nativeint -> bool Now you can call this function at any given place in your application.

If (GetWindowText(handle, Buff, nChars) > 0) StringBuilder Buff = new StringBuilder(nChars) Static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count) įinally we write a function that will print the name of current running window in the following function – private void GetActiveWindow() Static extern IntPtr GetForegroundWindow() In the class, we will declare the prototype of Windows API functions as below – To get started, we will import the following namespaces in our application – using System.Text We will specifically use GetForegroundWindow() and GetWindowText() functions to implement this functionality. Net application cannot access objects outside the application, to get the active window we will use few functions of Windows API provided by Microsoft. In this post, we will see how can we get the name of currently active window using C#.

How To List The Name of Current Active Window in C#

Getwindowtext combobox