dfl.commondialog source code

1 // Written by Christopher E. Miller
2 // See the included license.txt for copyright and license details.
3 
4 
5 
6 module dfl.commondialog;
7 
8 private import dfl.control, dfl.internal.winapi, dfl.base, dfl.drawing,
9         dfl.event;
10 private import dfl.application;
11 
12 public import dfl.filedialog, dfl.folderdialog, dfl.colordialog, dfl.fontdialog;
13 
14 
15 
16 abstract class CommonDialog { // docmain
17 
18    abstract void reset();
19 
20 
21    // Uses currently active window of the application as owner.
22    abstract DialogResult showDialog();
23 
24    /// ditto
25    abstract DialogResult showDialog(IWindow owner);
26 
27 
28 
29    Event!(CommonDialog, HelpEventArgs) helpRequest;
30 
31 
32  protected:
33 
34 
35    // See the CDN_* Windows notification messages.
36    LRESULT hookProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) {
37       switch(msg) {
38          case WM_NOTIFY: {
39                NMHDR* nmhdr;
40                nmhdr = cast(NMHDR*)lparam;
41                switch(nmhdr.code) {
42                   case CDN_HELP: {
43                         Point pt;
44                         GetCursorPos(&pt.point);
45                         onHelpRequest(new HelpEventArgs(pt));
46                      }
47                      break;
48 
49                   default:
50                }
51             }
52             break;
53 
54          default:
55       }
56 
57       return 0;
58    }
59 
60 
61    // TODO: implement.
62    //LRESULT ownerWndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
63 
64 
65 
66    void onHelpRequest(HelpEventArgs ea) {
67       helpRequest(this, ea);
68    }
69 
70 
71 
72    abstract bool runDialog(HWND owner);
73 
74 
75    package final void _cantrun() {
76       throw new DflException("Error running dialog");
77    }
78 }
79