// Static Create method called by UIAutomation to create proxies for [....] controls.
// returns null if unsuccessful
internal static IRawElementProviderSimple Create(IntPtr hwnd, int idChild, int idObject)
{
// Currently there is an issue with CLR remoting that causes Accessible.CreateNativeFromEvent() to fail
// for [....] controls. Until that is resolved use AccessibleObjectFromWindow() instead. It will
// return a Native IAccessble and not a OleAcc implementaion. [....] does provide a Native IAccessible.
Accessible acc = null;
if (Accessible.AccessibleObjectFromWindow(hwnd, idObject, ref acc) != NativeMethods.S_OK || acc == null)
{
return(null);
}
switch (acc.Role)
{
// ============================================================
// WinformsSpinner controls are not identifiable by classname or
// other simple properties. The following case calls the
// WinformsSpinner constructor which in turn tries to establish
// the class of the control as a fact or returns null.
case AccessibleRole.Combobox:
return(WinformsSpinner.Create(hwnd, idChild, idObject));
// ============================================================
case AccessibleRole.SpinButton:
return(WindowsUpDown.Create(hwnd, idChild, idObject));
case AccessibleRole.Grouping:
return(new WindowsButton(hwnd, null, WindowsButton.ButtonType.GroupBox, Misc.GetWindowStyle(hwnd) & NativeMethods.BS_TYPEMASK, acc));
case AccessibleRole.StatusBar:
WindowsStatusBar sb = new WindowsStatusBar(hwnd, null, 0, acc);
if (sb == null)
{
return(null);
}
return(idChild == NativeMethods.CHILD_SELF ? sb : sb.CreateStatusBarPane(idChild));
default:
break;
}
return(null);
}
// Static Create method called by UIAutomation to create proxies for [....] controls.
// returns null if unsuccessful
internal static IRawElementProviderSimple Create(IntPtr hwnd, int idChild, int idObject)
{
// Currently there is an issue with CLR remoting that causes Accessible.CreateNativeFromEvent() to fail
// for [....] controls. Until that is resolved use AccessibleObjectFromWindow() instead. It will
// return a Native IAccessble and not a OleAcc implementaion. [....] does provide a Native IAccessible.
Accessible acc = null;
if (Accessible.AccessibleObjectFromWindow(hwnd, idObject, ref acc) != NativeMethods.S_OK || acc == null)
{
return null;
}
switch (acc.Role)
{
// ============================================================
// WinformsSpinner controls are not identifiable by classname or
// other simple properties. The following case calls the
// WinformsSpinner constructor which in turn tries to establish
// the class of the control as a fact or returns null.
case AccessibleRole.Combobox:
return WinformsSpinner.Create( hwnd, idChild, idObject );
// ============================================================
case AccessibleRole.SpinButton:
return WindowsUpDown.Create( hwnd, idChild, idObject );
case AccessibleRole.Grouping:
return new WindowsButton(hwnd, null, WindowsButton.ButtonType.GroupBox, Misc.GetWindowStyle(hwnd) & NativeMethods.BS_TYPEMASK, acc);
case AccessibleRole.StatusBar:
WindowsStatusBar sb = new WindowsStatusBar(hwnd, null, 0, acc);
if (sb == null)
{
return null;
}
return idChild == NativeMethods.CHILD_SELF ? sb : sb.CreateStatusBarPane(idChild);
default:
break;
}
return null;
}