| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/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 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #ifdef __BORLANDC__ |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #if wxUSE_POPUPWIN |
| 28 | |
| 29 | #ifndef WX_PRECOMP |
| 30 | #endif //WX_PRECOMP |
| 31 | |
| 32 | #include "wx/popupwin.h" |
| 33 | |
| 34 | #include "wx/msw/private.h" // for GetDesktopWindow() |
| 35 | |
| 36 | // ============================================================================ |
| 37 | // implementation |
| 38 | // ============================================================================ |
| 39 | |
| 40 | bool wxPopupWindow::Create(wxWindow *parent, int flags) |
| 41 | { |
| 42 | // popup windows are created hidden by default |
| 43 | Hide(); |
| 44 | |
| 45 | return wxPopupWindowBase::Create(parent) && |
| 46 | wxWindow::Create(parent, wxID_ANY, |
| 47 | wxDefaultPosition, wxDefaultSize, |
| 48 | flags | wxPOPUP_WINDOW); |
| 49 | } |
| 50 | |
| 51 | void wxPopupWindow::DoGetPosition(int *x, int *y) const |
| 52 | { |
| 53 | // the position of a "top level" window such as this should be in |
| 54 | // screen coordinates, not in the client ones which MSW gives us |
| 55 | // (because we are a child window) |
| 56 | wxPopupWindowBase::DoGetPosition(x, y); |
| 57 | |
| 58 | GetParent()->ClientToScreen(x, y); |
| 59 | } |
| 60 | |
| 61 | WXDWORD wxPopupWindow::MSWGetStyle(long flags, WXDWORD *exstyle) const |
| 62 | { |
| 63 | // we only honour the border flags, the others don't make sense for us |
| 64 | WXDWORD style = wxWindow::MSWGetStyle(flags & wxBORDER_MASK, exstyle); |
| 65 | |
| 66 | if ( exstyle ) |
| 67 | { |
| 68 | // a popup window floats on top of everything |
| 69 | *exstyle |= WS_EX_TOPMOST | WS_EX_TOOLWINDOW; |
| 70 | } |
| 71 | |
| 72 | return style; |
| 73 | } |
| 74 | |
| 75 | WXHWND wxPopupWindow::MSWGetParent() const |
| 76 | { |
| 77 | // we must be a child of the desktop to be able to extend beyond the parent |
| 78 | // window client area (like the comboboxes drop downs do) |
| 79 | // |
| 80 | // NB: alternative implementation would be to use WS_POPUP instead of |
| 81 | // WS_CHILD but then showing a popup would deactivate the parent which |
| 82 | // is ugly and working around this, although possible, is even more |
| 83 | // ugly |
| 84 | // GetDesktopWindow() is not always supported on WinCE, and if |
| 85 | // it is, it often returns NULL. |
| 86 | #ifdef __WXWINCE__ |
| 87 | return 0; |
| 88 | #else |
| 89 | return (WXHWND)::GetDesktopWindow(); |
| 90 | #endif |
| 91 | } |
| 92 | |
| 93 | bool wxPopupWindow::Show(bool show) |
| 94 | { |
| 95 | if ( !wxWindowMSW::Show(show) ) |
| 96 | return false; |
| 97 | |
| 98 | if ( show ) |
| 99 | { |
| 100 | // raise to top of z order |
| 101 | if (!::SetWindowPos(GetHwnd(), HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE)) |
| 102 | { |
| 103 | wxLogLastError(_T("SetWindowPos")); |
| 104 | } |
| 105 | |
| 106 | // and set it as the foreground window so the mouse can be captured |
| 107 | ::SetForegroundWindow(GetHwnd()); |
| 108 | } |
| 109 | |
| 110 | return true; |
| 111 | } |
| 112 | |
| 113 | #endif // #if wxUSE_POPUPWIN |