#include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
#include "wx/app.h"
#include "wx/control.h"
- #include "wx/combobox.h"
#endif
#include "wx/tokenzr.h"
#include "wx/msw/private.h"
+#ifndef TTTOOLINFO_V1_SIZE
+ #define TTTOOLINFO_V1_SIZE 0x28
+#endif
+
+#ifndef TTF_TRANSPARENT
+ #define TTF_TRANSPARENT 0x0100
+#endif
+
// VZ: normally, the trick with subclassing the tooltip control and processing
// TTM_WINDOWFROMPOINT should work but, somehow, it doesn't. I leave the
// code here for now (but it's not compiled) in case we need it later.
// the tooltip parent window
WXHWND wxToolTip::ms_hwndTT = (WXHWND)NULL;
+// new tooltip maximum width, default value is set on first call to wxToolTip::Add()
+int wxToolTip::ms_maxWidth = 0;
+
#if wxUSE_TTM_WINDOWFROMPOINT
// the tooltip window proc
::ZeroMemory(this, sizeof(TOOLINFO));
// the structure TOOLINFO has been extended with a 4 byte field in
- // version 4.70 of comctl32.dll and if we compile on a newer machine
- // but run on one with the old version of comctl32, nothing will work
- // because the library will detect that we rely on a more recent
- // version of it. So we always use the old size - if we ever start
- // using our lParam member, we'd have to check for comctl32 version
- // during run-time
-#if _WIN32_IE >= 0x0300
- cbSize = sizeof(TOOLINFO) - sizeof(LPARAM);
-#else // old headers
- cbSize = sizeof(TOOLINFO);
-#endif // compile-time comctl32.dll version
+ // version 4.70 of comctl32.dll and another one in 5.01 but we don't
+ // use these extended fields so use the old struct size to ensure that
+ // the tooltips work on old (Windows 95) systems too
+ cbSize = TTTOOLINFO_V1_SIZE;
hwnd = hwndOwner;
uFlags = TTF_IDISHWND;
- uId = (UINT)hwndOwner;
+
+ // we use TTF_TRANSPARENT to fix a problem which arises at least with
+ // the text controls but may presumably happen with other controls
+ // which display the tooltip at mouse position: it can start flashing
+ // then as the control gets "focus lost" events and dismisses the
+ // tooltip which then reappears because mouse remains hovering over the
+ // control, see SF patch 1821229
+ if ( wxApp::GetComCtl32Version() >= 470 )
+ {
+ uFlags |= TTF_TRANSPARENT;
+ }
+
+ uId = (UINT_PTR)hwndOwner;
}
};
TTDT_RESHOW, milliseconds);
}
+void wxToolTip::SetMaxWidth(int width)
+{
+ wxASSERT_MSG( width == -1 || width >= 0, _T("invalid width value") );
+
+ ms_maxWidth = width;
+}
+
// ---------------------------------------------------------------------------
// implementation helpers
// ---------------------------------------------------------------------------
}
else
{
- // check for multiline toopltip
- int index = m_text.Find(_T('\n'));
-
- if ( index != wxNOT_FOUND )
- {
#ifdef TTM_SETMAXTIPWIDTH
- if ( wxApp::GetComCtl32Version() >= 470 )
- {
- // use TTM_SETMAXTIPWIDTH to make tooltip multiline using the
- // extent of its first line as max value
- HFONT hfont = (HFONT)
- SendTooltipMessage(GetToolTipCtrl(), WM_GETFONT, 0);
+ if ( wxApp::GetComCtl32Version() >= 470 )
+ {
+ // use TTM_SETMAXTIPWIDTH to make tooltip multiline using the
+ // extent of its first line as max value
+ HFONT hfont = (HFONT)
+ SendTooltipMessage(GetToolTipCtrl(), WM_GETFONT, 0);
+ if ( !hfont )
+ {
+ hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
if ( !hfont )
{
- hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
- if ( !hfont )
- {
- wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)"));
- }
+ wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)"));
}
+ }
- MemoryHDC hdc;
- if ( !hdc )
- {
- wxLogLastError(wxT("CreateCompatibleDC(NULL)"));
- }
+ MemoryHDC hdc;
+ if ( !hdc )
+ {
+ wxLogLastError(wxT("CreateCompatibleDC(NULL)"));
+ }
- if ( !SelectObject(hdc, hfont) )
- {
- wxLogLastError(wxT("SelectObject(hfont)"));
- }
+ if ( !SelectObject(hdc, hfont) )
+ {
+ wxLogLastError(wxT("SelectObject(hfont)"));
+ }
+
+ // find the width of the widest line
+ int maxWidth = 0;
+ wxStringTokenizer tokenizer(m_text, _T("\n"));
+ while ( tokenizer.HasMoreTokens() )
+ {
+ const wxString token = tokenizer.GetNextToken();
- // find the width of the widest line
- int max = 0;
- wxStringTokenizer tokenizer(m_text, _T("\n"));
- wxString token = tokenizer.GetNextToken();
- while (token.length())
+ SIZE sz;
+ if ( !::GetTextExtentPoint32(hdc, token.wx_str(),
+ token.length(), &sz) )
{
- SIZE sz;
- if ( !::GetTextExtentPoint32(hdc, token.wx_str(), token.length(), &sz) )
- {
- wxLogLastError(wxT("GetTextExtentPoint32"));
- }
- if ( sz.cx > max )
- max = sz.cx;
-
- token = tokenizer.GetNextToken();
+ wxLogLastError(wxT("GetTextExtentPoint32"));
}
- // only set a new width if it is bigger than the current setting
- if (max > SendTooltipMessage(GetToolTipCtrl(), TTM_GETMAXTIPWIDTH, 0))
- SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH,
- (void *)max);
+ if ( sz.cx > maxWidth )
+ maxWidth = sz.cx;
}
- else
-#endif // comctl32.dll >= 4.70
+
+ // limit size to ms_maxWidth, if set
+ if ( ms_maxWidth == 0 )
{
- // replace the '\n's with spaces because otherwise they appear as
- // unprintable characters in the tooltip string
- m_text.Replace(_T("\n"), _T(" "));
- ti.lpszText = (wxChar *)m_text.wx_str(); // const_cast
+ // this is more or less arbitrary but seems to work well
+ static const int DEFAULT_MAX_WIDTH = 400;
- if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
- {
- wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str());
- }
+ ms_maxWidth = wxGetClientDisplayRect().width / 2;
+
+ if ( ms_maxWidth > DEFAULT_MAX_WIDTH )
+ ms_maxWidth = DEFAULT_MAX_WIDTH;
+ }
+
+ if ( ms_maxWidth != -1 && maxWidth > ms_maxWidth )
+ maxWidth = ms_maxWidth;
+
+ // only set a new width if it is bigger than the current setting
+ SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH,
+ wxUIntToPtr(maxWidth));
+ }
+ else
+#endif // TTM_SETMAXTIPWIDTH
+ {
+ // replace the '\n's with spaces because otherwise they appear as
+ // unprintable characters in the tooltip string
+ m_text.Replace(_T("\n"), _T(" "));
+ ti.lpszText = (wxChar *)m_text.wx_str(); // const_cast
+
+ if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+ {
+ wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str());
}
}
}
Add(m_window->GetHWND());
}
#if !defined(__WXUNIVERSAL__)
- // and all of its subcontrols (e.g. radiobuttons in a radiobox) as well
+ // and all of its subcontrols (e.g. radio buttons in a radiobox) as well
wxControl *control = wxDynamicCast(m_window, wxControl);
if ( control )
{
Add((WXHWND)hwnd);
}
}
-
- // VZ: it's ugly to do it here, but I don't want any major changes right
- // now, later we will probably want to have wxWindow::OnGotToolTip() or
- // something like this where the derived class can do such things
- // itself instead of wxToolTip "knowing" about them all
- wxComboBox *combo = wxDynamicCast(control, wxComboBox);
- if ( combo )
- {
- WXHWND hwndComboEdit = combo->GetWindowStyle() & wxCB_READONLY
- ? combo->GetHWND()
- : combo->GetEditHWND();
- if ( hwndComboEdit )
- {
- Add(hwndComboEdit);
- }
- }
#endif // !defined(__WXUNIVERSAL__)
}
projects / wxWidgets.git / blobdiff