// Created: 31.01.99
// RCS-ID: $Id$
// Copyright: (c) 1999 Vadim Zeitlin
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
#include "wx/tooltip.h"
#include "wx/msw/private.h"
-#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
-#include <commctrl.h>
-#endif
+// include <commctrl.h> "properly"
+#include "wx/msw/wrapcctl.h"
+
+// 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.
+//
+// For now I use an ugly workaround and process TTN_NEEDTEXT directly in
+// radio button wnd proc - fixing TTM_WINDOWFROMPOINT code would be nice
+// because it would then work for all controls, not only radioboxes but for
+// now I don't understand what's wrong with it...
+#define wxUSE_TTM_WINDOWFROMPOINT 0
+
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// the tooltip parent window
+WXHWND wxToolTip::ms_hwndTT = (WXHWND)NULL;
+
+#if wxUSE_TTM_WINDOWFROMPOINT
+
+// the tooltip window proc
+static WNDPROC gs_wndprocToolTip = (WNDPROC)NULL;
+
+#endif // wxUSE_TTM_WINDOWFROMPOINT
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
-// a simple wrapper around TOOLINFO Win32 structure
+// a wrapper around TOOLINFO Win32 structure
+#ifdef __VISUALC__
+ #pragma warning( disable : 4097 ) // we inherit from a typedef - so what?
+#endif
+
class wxToolInfo : public TOOLINFO
{
public:
- wxToolInfo(wxWindow *win)
+ wxToolInfo(HWND hwndOwner)
{
// initialize all members
-#ifdef __GNUWIN32__
- memset(this, 0, sizeof(TOOLINFO));
-#else
::ZeroMemory(this, sizeof(TOOLINFO));
-#endif
+ // 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
+
+ hwnd = hwndOwner;
uFlags = TTF_IDISHWND;
- uId = (UINT)win->GetHWND();
+ uId = (UINT)hwndOwner;
}
};
+#ifdef __VISUALC__
+ #pragma warning( default : 4097 )
+#endif
+
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
-// send a message to the tooltip control
-inline LRESULT SendTooltipMessage(WXHWND hwnd,
- UINT msg,
- WPARAM wParam,
- void *lParam)
+// send a message to the tooltip control if it exists
+//
+// NB: wParam is always 0 for the TTM_XXX messages we use
+static inline LRESULT SendTooltipMessage(WXHWND hwnd, UINT msg, void *lParam)
{
- return hwnd ? ::SendMessage((HWND)hwnd, msg, wParam, (LPARAM)lParam)
- : 0;
+ return hwnd ? ::SendMessage((HWND)hwnd, msg, 0, (LPARAM)lParam) : 0;
}
// send a message to all existing tooltip controls
-static void SendTooltipMessageToAll(UINT msg, WPARAM wParam, LPARAM lParam)
+static inline void
+SendTooltipMessageToAll(WXHWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ if ( hwnd )
+ ::SendMessage((HWND)hwnd, msg, wParam, lParam);
+}
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+#if wxUSE_TTM_WINDOWFROMPOINT
+
+// ----------------------------------------------------------------------------
+// window proc for our tooltip control
+// ----------------------------------------------------------------------------
+
+LRESULT APIENTRY wxToolTipWndProc(HWND hwndTT,
+ UINT msg,
+ WPARAM wParam,
+ LPARAM lParam)
{
- // NB: it might be somewhat easier to maintain a list of all existing
- // wxToolTip controls (put them there in ctor, delete from the list
- // in dtor) - may be it's worth doing it this way? OTOH, typical
- // application won't have many top level windows, so iterating over all
- // of them shouldnt' take much time neither...
-
- // iterate over all top level windows and send message to the tooltip
- // control of each and every of them (or more precisely to all dialogs and
- // frames)
- wxDialog *dialog = NULL;
- wxFrame *frame = NULL;
-
- wxNode *node = wxTopLevelWindows.First();
- while ( node )
+ if ( msg == TTM_WINDOWFROMPOINT )
{
- wxWindow *win = (wxWindow *)node->Data();
+ LPPOINT ppt = (LPPOINT)lParam;
- node = node->Next();
+ // the window on which event occurred
+ HWND hwnd = ::WindowFromPoint(*ppt);
- if ( win->IsKindOf(CLASSINFO(wxFrame)) )
- {
- frame = (wxFrame *)win;
- dialog = NULL;
- }
- else if ( win->IsKindOf(CLASSINFO(wxDialog)) )
+ OutputDebugString("TTM_WINDOWFROMPOINT: ");
+ OutputDebugString(wxString::Format("0x%08x => ", hwnd));
+
+ // return a HWND corresponding to a wxWindow because only wxWidgets are
+ // associated with tooltips using TTM_ADDTOOL
+ wxWindow *win = wxGetWindowFromHWND((WXHWND)hwnd);
+
+ if ( win )
{
- dialog = (wxDialog *)win;
- frame = NULL;
+ hwnd = GetHwndOf(win);
+ OutputDebugString(wxString::Format("0x%08x\r\n", hwnd));
+
+#if 0
+ // modify the point too!
+ RECT rect;
+ GetWindowRect(hwnd, &rect);
+
+ ppt->x = (rect.right - rect.left) / 2;
+ ppt->y = (rect.bottom - rect.top) / 2;
+#endif // 0
+ return (LRESULT)hwnd;
}
else
{
- // skip this strange top level window
- continue;
- }
-
- wxASSERT_MSG( dialog || frame, _T("logic error") );
-
- WXHWND hwndTT = frame ? frame->GetToolTipCtrl()
- : dialog->GetToolTipCtrl();
- if ( hwndTT )
- {
- (void)SendTooltipMessage(hwndTT, msg, wParam, (void *)lParam);
+ OutputDebugString("no window\r\n");
}
}
+
+ return ::CallWindowProc(CASTWNDPROC gs_wndprocToolTip, hwndTT, msg, wParam, lParam);
}
-// ============================================================================
-// implementation
-// ============================================================================
+#endif // wxUSE_TTM_WINDOWFROMPOINT
// ----------------------------------------------------------------------------
// static functions
void wxToolTip::Enable(bool flag)
{
- SendTooltipMessageToAll(TTM_ACTIVATE, flag, 0);
+ SendTooltipMessageToAll(ms_hwndTT, TTM_ACTIVATE, flag, 0);
}
void wxToolTip::SetDelay(long milliseconds)
{
- SendTooltipMessageToAll(TTM_SETDELAYTIME, TTDT_INITIAL, milliseconds);
+ SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME,
+ TTDT_INITIAL, milliseconds);
}
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
// create the tooltip ctrl for our parent frame if it doesn't exist yet
+/* static */
WXHWND wxToolTip::GetToolTipCtrl()
{
- // find either parent dialog or parent frame - tooltip controls are managed
- // by these 2 classes only (it doesn't make sense to create one tooltip per
- // each and every wxWindow)
- wxFrame *frame = NULL;
- wxDialog *dialog = NULL;
-
- wxWindow *parent = m_window;
- while ( parent )
+ if ( !ms_hwndTT )
{
- if ( parent->IsKindOf(CLASSINFO(wxFrame)) )
- {
- frame = (wxFrame *)parent;
-
- break;
- }
- else if ( parent->IsKindOf(CLASSINFO(wxDialog)) )
- {
- dialog = (wxDialog *)parent;
-
- break;
- }
-
- parent = parent->GetParent();
+ ms_hwndTT = (WXHWND)::CreateWindow(TOOLTIPS_CLASS,
+ (LPCTSTR)NULL,
+ TTS_ALWAYSTIP,
+ CW_USEDEFAULT, CW_USEDEFAULT,
+ CW_USEDEFAULT, CW_USEDEFAULT,
+ NULL, (HMENU)NULL,
+ wxGetInstance(),
+ NULL);
+ if ( ms_hwndTT )
+ {
+ HWND hwnd = (HWND)ms_hwndTT;
+ SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0,
+ SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
+
+#if wxUSE_TTM_WINDOWFROMPOINT
+ // subclass the newly created control
+ gs_wndprocToolTip = wxSetWindowProc(hwnd, wxToolTipWndProc);
+#endif // wxUSE_TTM_WINDOWFROMPOINT
+ }
}
- wxCHECK_MSG( frame || dialog, 0,
- _T("can't create tooltip control outside a frame or a dialog") );
-
- HWND hwndTT = (HWND)(frame ? frame->GetToolTipCtrl()
- : dialog->GetToolTipCtrl());
- if ( !hwndTT )
- {
- hwndTT = ::CreateWindow(TOOLTIPS_CLASS,
- (LPSTR)NULL,
- TTS_ALWAYSTIP,
- CW_USEDEFAULT, CW_USEDEFAULT,
- CW_USEDEFAULT, CW_USEDEFAULT,
- (HWND)parent->GetHWND(), (HMENU)NULL,
- wxGetInstance(), NULL);
-
- if ( hwndTT )
- {
- if ( frame )
- frame->SetToolTipCtrl((WXHWND)hwndTT);
- else
- dialog->SetToolTipCtrl((WXHWND)hwndTT);
- }
- else
- {
- wxLogSysError(_("Can not create tooltip control"));
- }
- }
-
- return (WXHWND)hwndTT;
+ return ms_hwndTT;
}
+/* static */
void wxToolTip::RelayEvent(WXMSG *msg)
{
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, 0, msg);
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, msg);
}
// ----------------------------------------------------------------------------
// ctor & dtor
// ----------------------------------------------------------------------------
+IMPLEMENT_ABSTRACT_CLASS(wxToolTip, wxObject)
+
wxToolTip::wxToolTip(const wxString &tip)
: m_text(tip)
{
wxToolTip::~wxToolTip()
{
- // there is no need to Remove() this tool - it will be done automatically
- // anyhow
+ // the tooltip has to be removed before deleting. Otherwise, if it is visible
+ // while being deleted, there will be a delay before it goes away.
+ Remove();
}
// ----------------------------------------------------------------------------
// others
// ----------------------------------------------------------------------------
+void wxToolTip::Remove(WXHWND hWnd)
+{
+ wxToolInfo ti((HWND)hWnd);
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, &ti);
+}
+
void wxToolTip::Remove()
{
// remove this tool from the tooltip control
if ( m_window )
{
- wxToolInfo ti(m_window);
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, 0, &ti);
+ Remove(m_window->GetHWND());
+ }
+}
+
+void wxToolTip::Add(WXHWND hWnd)
+{
+ HWND hwnd = (HWND)hWnd;
+
+ wxToolInfo ti(hwnd);
+
+ // another possibility would be to specify LPSTR_TEXTCALLBACK here as we
+ // store the tooltip text ourselves anyhow, and provide it in response to
+ // TTN_NEEDTEXT (sent via WM_NOTIFY), but then we would be limited to 79
+ // character tooltips as this is the size of the szText buffer in
+ // NMTTDISPINFO struct -- and setting the tooltip here we can have tooltips
+ // of any length
+ ti.hwnd = hwnd;
+ ti.lpszText = (wxChar *)m_text.c_str(); // const_cast
+
+ if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+ {
+ wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str());
+ }
+ 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 ( !hfont )
+ {
+ hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
+ if ( !hfont )
+ {
+ wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)"));
+ }
+ }
+
+ MemoryHDC hdc;
+ if ( !hdc )
+ {
+ wxLogLastError(wxT("CreateCompatibleDC(NULL)"));
+ }
+
+ if ( !SelectObject(hdc, hfont) )
+ {
+ wxLogLastError(wxT("SelectObject(hfont)"));
+ }
+
+ SIZE sz;
+ if ( !::GetTextExtentPoint32(hdc, m_text, index, &sz) )
+ {
+ wxLogLastError(wxT("GetTextExtentPoint32"));
+ }
+
+ SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH,
+ (void *)sz.cx);
+ }
+ else
+#endif // comctl32.dll >= 4.70
+ {
+ // 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.c_str(); // const_cast
+
+ if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+ {
+ wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str());
+ }
+ }
+ }
}
}
m_window = win;
+ // add the window itself
if ( m_window )
{
- wxToolInfo ti(m_window);
-
- // as we store our text anyhow, it seems useless to waste system memory
- // by asking the tooltip ctrl to remember it too - instead it will send
- // us TTN_NEEDTEXT (via WM_NOTIFY) when it is about to be shown
- ti.hwnd = (HWND)m_window->GetHWND();
- ti.lpszText = LPSTR_TEXTCALLBACK;
- // instead of: ti.lpszText = (char *)m_text.c_str();
+ Add(m_window->GetHWND());
+ }
+#if !defined(__WXUNIVERSAL__)
+ // and all of its subcontrols (e.g. radiobuttons in a radiobox) as well
+ wxControl *control = wxDynamicCast(m_window, wxControl);
+ if ( control )
+ {
+ const wxArrayLong& subcontrols = control->GetSubcontrols();
+ size_t count = subcontrols.GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ int id = subcontrols[n];
+ HWND hwnd = GetDlgItem(GetHwndOf(m_window), id);
+ if ( !hwnd )
+ {
+ // may be it's a child of parent of the control, in fact?
+ // (radiobuttons are subcontrols, i.e. children of the radiobox
+ // for wxWidgets but are its siblings at Windows level)
+ hwnd = GetDlgItem(GetHwndOf(m_window->GetParent()), id);
+ }
+
+ // must have it by now!
+ wxASSERT_MSG( hwnd, _T("no hwnd for subcontrol?") );
+
+ Add((WXHWND)hwnd);
+ }
+ }
- if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) )
+ // 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 )
{
- wxLogSysError(_("Failed to create the tooltip '%s'"),
- m_text.c_str());
+ Add(hwndComboEdit);
}
}
+#endif // !defined(__WXUNIVERSAL__)
}
void wxToolTip::SetTip(const wxString& tip)
if ( m_window )
{
- // update it immediately
- wxToolInfo ti(m_window);
+ // update the tip text shown by the control
+ wxToolInfo ti(GetHwndOf(m_window));
ti.lpszText = (wxChar *)m_text.c_str();
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti);
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
}
}
projects / wxWidgets.git / blobdiff