I saw a method called Control.FromHandle which (should) give you the access to it. Now, I wanted to try it using this code
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
// Find window by Caption only. Note you must pass IntPtr.Zero as the first parameter.
[DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
static extern IntPtr FindWindowByCaption(IntPtr ZeroOnly, string lpWindowName);
[DllImport("user32.dll")]
private static extern IntPtr GetDC(IntPtr hwnd);
[DllImport("user32.dll")]
private static extern bool ReleaseDC(IntPtr hwnd, IntPtr hdc);
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
IntPtr ptr = FindWindowByCaption(IntPtr.Zero, "Download");
Control f = Control.FromHandle(ptr);
f.Text = "Something";
}
but it won't, obviously, work. I checked personally that the handle is correct... but the method returns a null control. Any explaining?
This method only works if the handle you pass in actually is a Control
in your application.