Можно вызвать NativeWindowControl.CreateFromHandle из handle окна, и для созданного контрола показать тултип:
| Код |
public class NativeWindowControl : Control
{
private NativeWindowControl() { }
[DllImport("user32.dll")]
static extern IntPtr GetParent(IntPtr handle);
[DllImport("user32.dll")]
static extern int GetWindowThreadProcessId(IntPtr handle, ref int processId);
public static NativeWindowControl CreateFromHandle(IntPtr handle)
{
// create control...
NativeWindowControl ret = new NativeWindowControl();
FieldInfo fi = typeof(Control).GetField("window", BindingFlags.NonPublic | BindingFlags.Instance);
NativeWindow wnd = (NativeWindow)fi.GetValue(ret);
wnd.AssignHandle(handle);
ret.OnHandleCreated(EventArgs.Empty);
ret.UpdateBounds();
// ...and form
Form form = new Form();
IntPtr tmpHandle = handle, parentHandle = handle;
int unused = 0;
int currThreadId = GetWindowThreadProcessId(handle, ref unused);
while ((tmpHandle = GetParent(parentHandle)) != IntPtr.Zero)
{
if (GetWindowThreadProcessId(tmpHandle, ref unused) != currThreadId)
break;
parentHandle = tmpHandle;
}
wnd = (NativeWindow)fi.GetValue(form);
wnd.AssignHandle(parentHandle);
MethodInfo mi = typeof(Form).GetMethod("OnHandleCreated", BindingFlags.NonPublic | BindingFlags.Instance);
mi.Invoke(form, new object[] { EventArgs.Empty });
mi = typeof(Form).GetMethod("UpdateBounds", BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, null);
mi.Invoke(form, new object[0]);
form.Visible = true;
// bind them together
fi = typeof(Control).GetField("parent", BindingFlags.NonPublic | BindingFlags.Instance);
fi.SetValue(ret, form);
return ret;
}
protected override void CreateHandle()
{
}
}
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