Minor doc updates,
Made resizing a scrolled window function, git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3927 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@ -7,7 +7,8 @@ is selected, the previous selection is removed) or multiple selection
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(clicking an item toggles the item on or off independently of other
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selections).
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List box elements are numbered from zero.
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List box elements are numbered from zero. Their number is limited in
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some platforms (e.g. ca. 2000 on GTK).
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A listbox callback gets an event wxEVT\_COMMAND\_LISTBOX\_SELECT for single clicks, and
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wxEVT\_COMMAND\_LISTBOX\_DOUBLE\_CLICKED for double clicks.
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@ -14,6 +14,12 @@ If you don't wish to calculate your own scrolling, you must call PrepareDC when
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within OnDraw, to set the device origin for the device context according to the current
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scroll position.
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Note that the underlying system knows nothing about scrolling coordinates, so that all system
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functions (mouse events, expose events, refresh calls etc) as well as the position of subwindows
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are relative to the "physical" origin of the scrolled window. If the user insert a child window at
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position (10,10) and scrolls the window down 100 pixels (moving the child window out of the visible
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area), the child window will report a position of (10,-90).
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\wxheading{Derived from}
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\helpref{wxPanel}{wxpanel}\\
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@ -139,7 +145,9 @@ Enable or disable physical scrolling in the given direction. Physical
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scrolling is the physical transfer of bits up or down the
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screen when a scroll event occurs. If the application scrolls by a
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variable amount (e.g. if there are different font sizes) then physical
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scrolling will not work, and you should switch it off.
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scrolling will not work, and you should switch it off. Note that you
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will have to reposition child windows yourself, if physical scrolling
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is disabled.
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\wxheading{Parameters}
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@ -95,11 +95,11 @@ section.
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\subsection{Unicode support in wxWindows}
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In wxWindows, the code fragment froim above should be written instead:
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In wxWindows, the code fragment from above should be written instead:
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\begin{verbatim}
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wxChar ch = T('*');
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wxString s = T("Hello, world!");
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wxChar ch = wxT('*');
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wxString s = wxT("Hello, world!");
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int len = s.Len();
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\end{verbatim}
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@ -114,22 +114,22 @@ a separate type for strings though, because the standard
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\helpref{wxString}{wxstring} supports Unicode, i.e. it stores iether ANSI or
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Unicode strings depending on the mode.
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Finally, there is a special {\tt T()} macro which should enclose all literal
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Finally, there is a special {\tt wxT()} macro which should enclose all literal
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strings in the program. As it's easy to see comparing the last fragment with
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the one above, this macro expands to nothing in the (usual) ANSI mode and
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prefixes {\tt 'L'} to its argument in the Unicode mode.
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The important conclusion is that if you use {\tt wxChar} instead of
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{\tt char}, avoid using C style strings and use {\tt wxString} instead and
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don't forget to enclose all string literals inside {\tt T()} macro, your
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don't forget to enclose all string literals inside {\tt wxT()} macro, your
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program automatically becomes (almost) Unicode compliant!
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Just let us state once again the rules:
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\begin{itemize}
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\item Always use {\tt wxChar} instead of {\tt char}
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\item Always enclose literal string constants in {\tt T()} macro unless
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\item Always enclose literal string constants in {\tt wxT()} macro unless
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they're already converted to the right representation (another standard
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wxWindows macro {\tt \_()} does it, so there is no need for {\tt T()} in this
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wxWindows macro {\tt \_()} does it, so there is no need for {\tt wxT()} in this
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case) or you intend to pass the constant directly to an external function
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which doesn't accept wide-character strings.
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\item Use {\tt wxString} instead of C style strings.
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@ -28,10 +28,10 @@ window class or on all platforms.
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\twocolwidtha{5cm}%
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\begin{twocollist}\itemsep=0pt
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\twocolitem{\windowstyle{wxSIMPLE\_BORDER}}{Displays a thin border around the window. wxBORDER is the old name
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for this style. Windows only. }
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for this style. }
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\twocolitem{\windowstyle{wxDOUBLE\_BORDER}}{Displays a double border. Windows only.}
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\twocolitem{\windowstyle{wxSUNKEN\_BORDER}}{Displays a sunken border.}
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\twocolitem{\windowstyle{wxRAISED\_BORDER}}{Displays a raised border.}
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\twocolitem{\windowstyle{wxRAISED\_BORDER}}{Displays a raised border. GTK only. }
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\twocolitem{\windowstyle{wxSTATIC\_BORDER}}{Displays a border suitable for a static control. Windows only. }
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\twocolitem{\windowstyle{wxTRANSPARENT\_WINDOW}}{The window is transparent, that is, it will not receive paint
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events. Windows only.}
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@ -124,7 +124,7 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
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m_button = new wxButton( this, ID_QUERYPOS, "Query position", wxPoint(10,110) );
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(void) new wxTextCtrl( this, -1, "wxTextCtrl", wxPoint(10,150) );
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(void) new wxTextCtrl( this, -1, "wxTextCtrl", wxPoint(10,150), wxSize(80,-1) );
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(void) new wxRadioButton( this, -1, "Disable", wxPoint(10,190) );
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@ -305,10 +305,13 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
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}
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// Adjust the scrollbars - new version.
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void wxScrolledWindow::AdjustScrollbars(void)
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void wxScrolledWindow::AdjustScrollbars()
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{
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int w, h;
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GetClientSize(&w, &h);
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int oldXScroll = m_xScrollPosition;
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int oldYScroll = m_yScrollPosition;
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if (m_xScrollLines > 0)
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{
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@ -353,6 +356,22 @@ void wxScrolledWindow::AdjustScrollbars(void)
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m_yScrollPosition = 0;
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SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE);
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}
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if (oldXScroll != m_xScrollPosition)
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{
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if (m_xScrollingEnabled)
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ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0, (const wxRect *) NULL );
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else
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Refresh();
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}
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if (oldYScroll != m_yScrollPosition)
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{
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if (m_yScrollingEnabled)
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ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), (const wxRect *) NULL );
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else
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Refresh();
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}
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}
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// Default OnSize resets scrollbars, if any
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