toplevel event handler exposed

[wxWidgets.git] / src / msw / choice.cpp

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index d7184afc804c6e778bb52facff742e0099cac4e1..e80ff3b1660d3ea1af5a5cf64c5aecde19611872 100644 (file)
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -59,14 +59,14 @@ wxBEGIN_FLAGS( wxChoiceStyle )
     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
     wxFLAGS_MEMBER(wxRAISED_BORDER)
     wxFLAGS_MEMBER(wxSTATIC_BORDER)
     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
     wxFLAGS_MEMBER(wxRAISED_BORDER)
     wxFLAGS_MEMBER(wxSTATIC_BORDER)

-    wxFLAGS_MEMBER(wxNO_BORDER)
+    wxFLAGS_MEMBER(wxBORDER)

 
     // standard window styles
     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
     wxFLAGS_MEMBER(wxWANTS_CHARS)
 
     // standard window styles
     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
     wxFLAGS_MEMBER(wxWANTS_CHARS)

-    wxFLAGS_MEMBER(wxNO_FULL_REPAINT_ON_RESIZE)
+    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)

     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
     wxFLAGS_MEMBER(wxVSCROLL)
     wxFLAGS_MEMBER(wxHSCROLL)
     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
     wxFLAGS_MEMBER(wxVSCROLL)
     wxFLAGS_MEMBER(wxHSCROLL)


@@ -115,17 +115,6 @@ bool wxChoice::Create(wxWindow *parent,
                       const wxValidator& validator,
                       const wxString& name)
 {
                       const wxValidator& validator,
                       const wxString& name)
 {

-    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
-        return FALSE;
-
-    long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL /* | WS_CLIPSIBLINGS */;
-    if ( style & wxCB_SORT )
-        msStyle |= CBS_SORT;
-
-    if ( style & wxCLIP_SIBLINGS )
-        msStyle |= WS_CLIPSIBLINGS;
-
-

     // Experience shows that wxChoice vs. wxComboBox distinction confuses
     // quite a few people - try to help them
     wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&
     // Experience shows that wxChoice vs. wxComboBox distinction confuses
     // quite a few people - try to help them
     wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&


@@ -134,23 +123,105 @@ bool wxChoice::Create(wxWindow *parent,
                   _T("this style flag is ignored by wxChoice, you ")
                   _T("probably want to use a wxComboBox") );
 
                   _T("this style flag is ignored by wxChoice, you ")
                   _T("probably want to use a wxComboBox") );
 

-    if ( !MSWCreateControl(wxT("COMBOBOX"), msStyle) )
+    return CreateAndInit(parent, id, pos, size, n, choices, style,
+                         validator, name);
+}
+
+bool wxChoice::CreateAndInit(wxWindow *parent,
+                             wxWindowID id,
+                             const wxPoint& pos,
+                             const wxSize& sizeOrig,
+                             int n, const wxString choices[],
+                             long style,
+                             const wxValidator& validator,
+                             const wxString& name)
+{
+    // this is a bit hackish but we want to prevent MSWCreateControl() from
+    // calling SetBestSize() (which it would do if any of the size components
+    // is not given) because it wouldn't calculate it correctly if we have any
+    // strings as they're not yet added to the control when it is called
+    //
+    // so: if we have any strings, we fudge the size parameter so that
+    // SetBestSize() is not called by MSWCreateControl() but then we do call it
+    // manually below
+    bool autoSize = false;
+    wxSize size = sizeOrig;
+    if ( n )
+    {
+        if ( size.x < 0 )
+        {
+            size.x = 1;
+            autoSize = true;
+        }
+        if ( size.y < 0 )
+        {
+            size.y = 1;
+            autoSize = true;
+        }
+    }
+
+    // initialize wxControl
+    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+        return FALSE;
+
+    // now create the real HWND
+    if ( !MSWCreateControl(wxT("COMBOBOX"), _T(""), pos, size) )

         return FALSE;
 
         return FALSE;
 

-    // A choice/combobox normally has a white background (or other, depending
-    // on global settings) rather than inheriting the parent's background colour.
+
+    // choice/combobox normally has "white" (depends on colour scheme, of
+    // course) background rather than inheriting the parent's background

     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 
     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 

+    // initialize the controls contents

     for ( int i = 0; i < n; i++ )
     {
         Append(choices[i]);
     }
 
     for ( int i = 0; i < n; i++ )
     {
         Append(choices[i]);
     }
 

-    SetSize(pos.x, pos.y, size.x, size.y);
+    // and now we may finally size the control properly (if needed)
+    if ( autoSize )
+    {
+        SetBestSize(sizeOrig);
+    }

 
     return TRUE;
 }
 
 
     return TRUE;
 }
 

+bool wxChoice::Create(wxWindow *parent,
+                      wxWindowID id,
+                      const wxPoint& pos,
+                      const wxSize& size,
+                      const wxArrayString& choices,
+                      long style,
+                      const wxValidator& validator,
+                      const wxString& name)
+{
+    wxCArrayString chs(choices);
+    return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
+                  style, validator, name);
+}
+
+WXDWORD wxChoice::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    // we never have an external border
+    WXDWORD msStyle = wxControl::MSWGetStyle
+                      (
+                        (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
+                      );
+
+    // WS_CLIPSIBLINGS is useful with wxChoice and doesn't seem to result in
+    // any problems
+    msStyle |= WS_CLIPSIBLINGS;
+
+    // wxChoice-specific styles
+    msStyle |= CBS_DROPDOWNLIST | WS_HSCROLL | WS_VSCROLL;
+    if ( style & wxCB_SORT )
+        msStyle |= CBS_SORT;
+
+    return msStyle;
+}
+

 wxChoice::~wxChoice()
 {
     Free();
 wxChoice::~wxChoice()
 {
     Free();


@@ -162,11 +233,17 @@ wxChoice::~wxChoice()
 
 int wxChoice::DoAppend(const wxString& item)
 {
 
 int wxChoice::DoAppend(const wxString& item)
 {

-    int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str());
+    int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LPARAM)item.c_str());

     if ( n == CB_ERR )
     {
         wxLogLastError(wxT("SendMessage(CB_ADDSTRING)"));
     }
     if ( n == CB_ERR )
     {
         wxLogLastError(wxT("SendMessage(CB_ADDSTRING)"));
     }

+    else // ok
+    {
+        // we need to refresh our size in order to have enough space for the
+        // newly added items
+        UpdateVisibleHeight();
+    }

 
     return n;
 }
 
     return n;
 }


@@ -176,11 +253,15 @@ int wxChoice::DoInsert(const wxString& item, int pos)
     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 
     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 

-    int n = (int)SendMessage(GetHwnd(), CB_INSERTSTRING, pos, (LONG)item.c_str());
+    int n = (int)SendMessage(GetHwnd(), CB_INSERTSTRING, pos, (LPARAM)item.c_str());

     if ( n == CB_ERR )
     {
         wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)"));
     }
     if ( n == CB_ERR )
     {
         wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)"));
     }

+    else // ok
+    {
+        UpdateVisibleHeight();
+    }

 
     return n;
 }
 
     return n;
 }


@@ -195,6 +276,8 @@ void wxChoice::Delete(int n)
     }
 
     SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
     }
 
     SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);

+
+    UpdateVisibleHeight();

 }
 
 void wxChoice::Clear()
 }
 
 void wxChoice::Clear()


@@ -202,6 +285,8 @@ void wxChoice::Clear()
     Free();
 
     SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
     Free();
 
     SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);

+
+    UpdateVisibleHeight();

 }
 
 void wxChoice::Free()
 }
 
 void wxChoice::Free()


@@ -353,6 +438,12 @@ wxClientData* wxChoice::DoGetItemClientObject( int n ) const
 // wxMSW specific helpers
 // ----------------------------------------------------------------------------
 
 // wxMSW specific helpers
 // ----------------------------------------------------------------------------
 

+void wxChoice::UpdateVisibleHeight()
+{
+    // be careful to not change the width here
+    DoSetSize(-1, -1, -1, GetSize().y, wxSIZE_USE_EXISTING);
+}
+

 void wxChoice::DoMoveWindow(int x, int y, int width, int height)
 {
     // here is why this is necessary: if the width is negative, the combobox
 void wxChoice::DoMoveWindow(int x, int y, int width, int height)
 {
     // here is why this is necessary: if the width is negative, the combobox


@@ -371,29 +462,64 @@ void wxChoice::DoMoveWindow(int x, int y, int width, int height)
     wxControl::DoMoveWindow(x, y, width, height);
 }
 
     wxControl::DoMoveWindow(x, y, width, height);
 }
 

+void wxChoice::DoGetSize(int *w, int *h) const
+{
+    // this is weird: sometimes, the height returned by Windows is clearly the
+    // total height of the control including the drop down list -- but only
+    // sometimes, and normally it isn't... I have no idea about what to do with
+    // this
+    wxControl::DoGetSize(w, h);
+}
+

 void wxChoice::DoSetSize(int x, int y,
 void wxChoice::DoSetSize(int x, int y,

-                         int width, int WXUNUSED(height),
+                         int width, int height,

                          int sizeFlags)
 {
                          int sizeFlags)
 {

-    // Ignore height parameter because height doesn't mean 'initially
-    // displayed' height, it refers to the drop-down menu as well. The
-    // wxWindows interpretation is different; also, getting the size returns
-    // the _displayed_ size (NOT the drop down menu size) so
-    // setting-getting-setting size would not work.
+    int heightOrig = height;
+
+    // the height which we must pass to Windows should be the total height of
+    // the control including the drop down list while the height given to us
+    // is, of course, just the height of the permanently visible part of it
+    if ( height != -1 )
+    {
+        // don't make the drop down list too tall, arbitrarily limit it to 40
+        // items max and also don't leave it empty
+        size_t nItems = GetCount();
+        if ( !nItems )
+            nItems = 9;
+        else if ( nItems > 39 )
+            nItems = 39;
+
+        // add space for the drop down list
+        const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
+        height += hItem*(nItems + 1);
+    }

 
 

-    wxControl::DoSetSize(x, y, width, -1, sizeFlags);
+    wxControl::DoSetSize(x, y, width, height, sizeFlags);
+
+    // if the height specified for the visible part of the control is
+    // different from the current one, we need to change it separately
+    // as it is not affected by normal WM_SETSIZE
+    if ( height != -1 )
+    {
+        const int delta = heightOrig - GetSize().y;
+        if ( delta )
+        {
+            int h = ::SendMessage(GetHwnd(), CB_GETITEMHEIGHT, (WPARAM)-1, 0);
+            SendMessage(GetHwnd(), CB_SETITEMHEIGHT, (WPARAM)-1, h + delta);
+        }
+    }

 }
 
 wxSize wxChoice::DoGetBestSize() const
 {
     // find the widest string
 }
 
 wxSize wxChoice::DoGetBestSize() const
 {
     // find the widest string

-    int wLine;

     int wChoice = 0;
     int wChoice = 0;

-    int nItems = GetCount();
-    for ( int i = 0; i < nItems; i++ )
+    const size_t nItems = GetCount();
+    for ( size_t i = 0; i < nItems; i++ )

     {
     {

-        wxString str(GetString(i));
-        GetTextExtent(str, &wLine, NULL);
+        int wLine;
+        GetTextExtent(GetString(i), &wLine, NULL);

         if ( wLine > wChoice )
             wChoice = wLine;
     }
         if ( wLine > wChoice )
             wChoice = wLine;
     }


@@ -403,20 +529,13 @@ wxSize wxChoice::DoGetBestSize() const
     if ( wChoice == 0 )
         wChoice = 100;
 
     if ( wChoice == 0 )
         wChoice = 100;
 

-    // the combobox should be larger than the widest string
-    int cx, cy;
-    wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
-
-    wChoice += 5*cx;
-
-    // Choice drop-down list depends on number of items (limited to 10)
-    size_t nStrings = nItems == 0 ? 10 : wxMin(10, nItems) + 1;
-    int hChoice = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*nStrings;
+    // the combobox should be slightly larger than the widest string
+    wChoice += 5*GetCharWidth();

 
 

-    return wxSize(wChoice, hChoice);
+    return wxSize(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight()));

 }
 
 }
 

-long wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)

 {
     if ( nMsg == WM_LBUTTONUP )
     {
 {
     if ( nMsg == WM_LBUTTONUP )
     {