C# Signature:
[DllImport("user32.dll")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
VB Signature:
<DllImport("user32.dll")> _
Shared Function FindWindowEx( _
ByVal hWndParent As IntPtr, _
ByVal hWndChildAfter As IntPtr, _
ByVal ClassName As String, _
ByVal WindowCaption As String) As IntPtr: End Function
Notes:
The FindWindowEx function retrieves the handle to a window whose class name and window name match the specified strings. The function searches child windows, beginning with the one following the given child window.
Works hand-in-hand with The FindWindow API
Tips & Tricks:
Use the fantastic Spy++ (One of the vStudio tools) to get details of specific Windows you're looking for.
Sample Code:
//C#
//Open Notepad First
string lpszParentClass = "Notepad";
string lpszParentWindow = "Untitled - Notepad";
string lpszClass = "Edit";
IntPtr ParenthWnd = new IntPtr(0);
IntPtr hWnd = new IntPtr(0);
ParenthWnd = FindWindow(lpszParentClass,lpszParentWindow);
if (ParenthWnd.Equals(IntPtr.Zero))
Console.WriteLine("Notepad Not Running");
else
{
hWnd = FindWindowEx(ParenthWnd,hWnd,lpszClass,"");
if (hWnd.Equals(IntPtr.Zero))
Console.WriteLine("What the F??? Notepad doesn't have an edit component ?");
else
{
Console.WriteLine("Notepad Window: " + ParenthWnd.ToString());
Console.WriteLine("Edit Control: " + hWnd.ToString());
}
}
Alternative Managed API:
Do you know one? Please contribute it!
