dguihub.core.controls.reflectedcontrol source code

1 /** DGui project file.
2 
3 Copyright: Trogu Antonio Davide 2011-2013
4 
5 License: $(HTTP boost.org/LICENSE_1_0.txt, Boost License 1.0).
6 
7 Authors: Trogu Antonio Davide
8 */
9 module dguihub.core.controls.reflectedcontrol;
10 
11 public import dguihub.core.controls.control;
12 
13 abstract class ReflectedControl : Control {
14    private void reflectMessageToChild(ref Message m) {
15       HWND hFrom = void; //Inizializzata sotto
16 
17       switch (m.msg) {
18       case WM_NOTIFY:
19          NMHDR* pNotify = cast(NMHDR*)m.lParam;
20          hFrom = pNotify.hwndFrom;
21          break;
22 
23       case WM_MEASUREITEM: {
24             MEASUREITEMSTRUCT* pMeasureItem = cast(MEASUREITEMSTRUCT*)m.lParam;
25 
26             switch (pMeasureItem.CtlType) {
27             case ODT_COMBOBOX:
28                hFrom = GetParent(cast(HWND)pMeasureItem.CtlID);
29                break;
30 
31             case ODT_MENU:
32                hFrom = this._handle; // Set the owner of the menu (this window)
33                break;
34 
35             default:
36                hFrom = cast(HWND)pMeasureItem.CtlID;
37                break;
38             }
39          }
40          break;
41 
42       case WM_DRAWITEM: {
43             DRAWITEMSTRUCT* pDrawItem = cast(DRAWITEMSTRUCT*)m.lParam;
44 
45             switch (pDrawItem.CtlType) {
46             case ODT_COMBOBOX:
47                hFrom = GetParent(pDrawItem.hwndItem);
48                break;
49 
50             case ODT_MENU:
51                hFrom = this._handle; // Set the owner of the menu (this window)
52                break;
53 
54             default:
55                hFrom = cast(HWND)pDrawItem.hwndItem;
56                break;
57             }
58          }
59          break;
60 
61       default: // WM_COMMAND
62          hFrom = cast(HWND)m.lParam;
63          break;
64       }
65 
66       /* If 'hFrom' is this window, the notification is sent by menus */
67       Control c = winCast!(Control)(GetWindowLongW(hFrom, GWL_USERDATA));
68 
69       if (c) {
70          c.sendMessage(DGUI_REFLECTMESSAGE, cast(WPARAM)&m, 0);
71       }
72    }
73 
74    protected override void wndProc(ref Message m) {
75       switch (m.msg) {
76       case WM_NOTIFY, WM_COMMAND, WM_MEASUREITEM, WM_DRAWITEM, WM_CTLCOLOREDIT, WM_CTLCOLORBTN: {
77             this.originalWndProc(m); //Components like: ComboBoxEx need this one!
78 
79             if (ReflectedControl.hasBit(this._cBits, ControlBits.canNotify)) //Avoid fake notification messages caused by component's properties (like text(), checked(), ...)
80             {
81                this.reflectMessageToChild(m);
82             }
83          }
84          break;
85 
86       default:
87          super.wndProc(m);
88          break;
89       }
90    }
91 }