]> git.saurik.com Git - wxWidgets.git/blob - src/msw/popupwin.cpp
wxStrdup(NULL) doesn't work
[wxWidgets.git] / src / msw / popupwin.cpp
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 #endif //WX_PRECOMP
33
34 #if wxUSE_POPUPWIN
35
36 #include "wx/popupwin.h"
37
38 #include "wx/msw/private.h" // for GetDesktopWindow()
39
40 IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
41
42 // ============================================================================
43 // implementation
44 // ============================================================================
45
46 bool wxPopupWindow::Create(wxWindow *parent, int flags)
47 {
48 return wxPopupWindowBase::Create(parent) &&
49 wxWindow::Create(parent, -1,
50 wxDefaultPosition, wxDefaultSize,
51 flags | wxPOPUP_WINDOW);
52 }
53
54 void wxPopupWindow::DoGetPosition(int *x, int *y) const
55 {
56 // the position of a "top level" window such as this should be in
57 // screen coordinates, not in the client ones which MSW gives us
58 // (because we are a child window)
59 wxPopupWindowBase::DoGetPosition(x, y);
60
61 GetParent()->ClientToScreen(x, y);
62 }
63
64 WXDWORD wxPopupWindow::MSWGetStyle(long flags, WXDWORD *exstyle) const
65 {
66 // we only honour the border flags, the others don't make sense for us
67 WXDWORD style = wxWindow::MSWGetStyle(flags & wxBORDER_MASK, exstyle);
68
69 if ( exstyle )
70 {
71 // a popup window floats on top of everything
72 *exstyle |= WS_EX_TOPMOST | WS_EX_TOOLWINDOW;
73 }
74
75 return style;
76 }
77
78 WXHWND wxPopupWindow::MSWGetParent() const
79 {
80 // we must be a child of the desktop to be able to extend beyond the parent
81 // window client area (like the comboboxes drop downs do)
82 //
83 // NB: alternative implementation would be to use WS_POPUP instead of
84 // WS_CHILD but then showing a popup would deactivate the parent which
85 // is ugly and working around this, although possible, is even more
86 // ugly
87 // GetDesktopWindow() is not always supported on WinCE, and if
88 // it is, it often returns NULL.
89 #ifdef __WXWINCE__
90 return 0;
91 #else
92 return (WXHWND)::GetDesktopWindow();
93 #endif
94 }
95
96 bool wxPopupWindow::Show(bool show)
97 {
98 if ( !wxWindowMSW::Show(show) )
99 return FALSE;
100
101 if ( show )
102 {
103 // raise to top of z order
104 if (!::SetWindowPos(GetHwnd(), HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE))
105 {
106 wxLogLastError(_T("SetWindowPos"));
107 }
108 }
109
110 return TRUE;
111 }
112
113 #endif // #if wxUSE_POPUPWIN
114