Delphi: How can i get Handle for TComboBox component?

As far as I know, Combobox consists of two components: Edit and ListBox. How can I get Handle of Combob开发者_开发技巧ox, if I have handle of it's Edit field ? I tried to use GetWindow(MyHandle, GW_HWNDNEXT), where MyHandle is that handle of Edit that I know, but the result is always 0. Someone have any ideas?

Thx a lot.

---

The Edit window is a child of the ComboBox window: Use GetParent.

---

TCustomCombo defines ListHandle and EditHandle properties. These have protected visibility but you can always get at them by either subclassing or using the standard trick to get at protected members:

type
  TCheatComboBox = class(TComboBox);

function GetListHandle(Combo: TComboBox): HWND;
begin
  Result := TCheatComboBox(Combo).ListHandle;
end;

---

How did you get the handle of the Edit? If you do Combobox1.Handle you get a handle for a COMBOBOX class window.

Read http://msdn.microsoft.com/en-us/library/bb775792(VS.85).aspx