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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: msw/popupwin.cpp
3 // Purpose: implements wxPopupWindow for MSW
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 08.05.02
7 // RCS-ID: $Id$
8 // Copyright: (c) 2002 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // License: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
21 #pragma implementation "popup.h"
22 #endif
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #ifndef WX_PRECOMP
32 #include "wx/defs.h"
33 #endif //WX_PRECOMP
34
35 #if wxUSE_POPUPWIN
36
37 #include "wx/popupwin.h"
38
39 #include "wx/msw/private.h" // for GetDesktopWindow()
40
41 IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
42
43 // ============================================================================
44 // implementation
45 // ============================================================================
46
47 bool wxPopupWindow::Create(wxWindow *parent, int flags)
48 {
49 return wxPopupWindowBase::Create(parent) &&
50 wxWindow::Create(parent, -1,
51 wxDefaultPosition, wxDefaultSize,
52 flags | wxPOPUP_WINDOW);
53 }
54
55 void wxPopupWindow::DoGetPosition(int *x, int *y) const
56 {
57 // the position of a "top level" window such as this should be in
58 // screen coordinates, not in the client ones which MSW gives us
59 // (because we are a child window)
60 wxPopupWindowBase::DoGetPosition(x, y);
61
62 GetParent()->ClientToScreen(x, y);
63 }
64
65 WXDWORD wxPopupWindow::MSWGetStyle(long flags, WXDWORD *exstyle) const
66 {
67 // we only honour the border flags, the others don't make sense for us
68 WXDWORD style = wxWindow::MSWGetStyle(flags & wxBORDER_MASK, exstyle);
69
70 if ( exstyle )
71 {
72 // a popup window floats on top of everything
73 *exstyle |= WS_EX_TOPMOST | WS_EX_TOOLWINDOW;
74 }
75
76 return style;
77 }
78
79 WXHWND wxPopupWindow::MSWGetParent() const
80 {
81 // we must be a child of the desktop to be able to extend beyond the parent
82 // window client area (like the comboboxes drop downs do)
83 //
84 // NB: alternative implementation would be to use WS_POPUP instead of
85 // WS_CHILD but then showing a popup would deactivate the parent which
86 // is ugly and working around this, although possible, is even more
87 // ugly
88 // GetDesktopWindow() is not always supported on WinCE, and if
89 // it is, it often returns NULL.
90 #ifdef __WXWINCE__
91 return 0;
92 #else
93 return (WXHWND)::GetDesktopWindow();
94 #endif
95 }
96
97 bool wxPopupWindow::Show(bool show)
98 {
99 if ( !wxWindowMSW::Show(show) )
100 return FALSE;
101
102 if ( show )
103 {
104 // raise to top of z order
105 if (!::SetWindowPos(GetHwnd(), HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE))
106 {
107 wxLogLastError(_T("SetWindowPos"));
108 }
109 }
110
111 return TRUE;
112 }
113
114 #endif // #if wxUSE_POPUPWIN
115