-%
-% automatically generated by HelpGen from
-% include\wx\sizer.h at 13/Aug/99 22:27:59
-%
-
-
\section{\class{wxBoxSizer}}\label{wxboxsizer}
-
-
-wxBoxSizer
+The basic idea behind a box sizer is that windows will most often be laid out in rather
+simple basic geomerty, typically in a row or a column or several hierachies of either.
+
+As an exmaple, we will construct a dialog that will contain a text field at the top and
+two buttons at the bottom. This can be seen as a top-hierarchy column with the text at
+the top and buttons at the bottom and a low-hierchary row with an OK button to the left
+and a Cancel button to the right. In many cases (particulary dialogs under Unix and
+normal frames) the main window will be resizable by the user and this change of size
+will have to get propagated to its children. In our case, we want the text area to grow
+with the dialog, whereas the button shall have a fixed size. In addition, there will be
+a thin border around all controls to make the dialog look nice and - to make matter worse -
+the buttons shall be centred as the width of the dialog changes.
+
+It is the unique feature of a box sizer, that it can grow in both directions (height and
+width) but can distribute its growth in the main direction (horizontal for a row) {\it unevenly}
+among its children. In our example case, the vertical sizer is supposed to propagate all its
+height changes to only the text area, not to the button area. This is determined by the
+{\it option} parameter when adding a window (or another sizer) to a sizer. It is interpreted
+as a weight factor, i.e. it can be zero, indicating that the window may not be resized
+at all, or above zero. If several windows have a value above zero, the value is interpreted
+relative to the sum of all weight factors of the sizer, so when adding two windows with
+a value of 1, they will both get resized equally much and each half as much as the sizer
+owning them. Then what do we do when a column sizer changes its width? This behaviour is
+controlled by {\it flags} (the second parameter of the Add() function): Zero or no flag indicates that
+the window will get aligned at the left (in a column sizer) and the top (row sizer), whereas
+wxALIGN\_RIGHT and wxALIGN\_BOTTOM will do what they say. The item can also be centered
+using the wxCENTRE flag (same as wxCENTER) or it can be forced to grow with the sizer (using
+the wxGROW flag (same as wxEXPAND)).
+
+As mentioned above, any window belonging to a sizer may have border, and it can be specified
+which of the four sides may have this border, using the wxTOP, wxLEFT, wxRIGHT and wxBOTTOM
+constants or wxALL for all directions (and you may also use wxNORTH, wxWEST etc instead). These
+flags can be used in combintaion with the alignement flags above as the second paramter of the
+Add() method using the binary or operator |. The sizer of the border also must be made known,
+and it is the third parameter in the Add() method. This means, that the entire behaviour of
+a sizer and its children can be controlled by the three parameters of the Add() method.
+
+\begin{verbatim}
+// we want to get a dialog that is stretchable because it
+// has a text ctrl at the top and two buttons at the bottom
+
+MyDialog::MyDialog(wxFrame *parent, wxWindowID id, const wxString &title ) :
+ wxDialog( parent, id, title, wxDefaultPosition, wxDefaultSize, wxDIALOG_STYLE | wxRESIZE_BORDER )
+{
+ wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
+
+ // create text ctrl with minimal size 100x60
+ topsizer->Add(
+ new wxTextCtrl( this, -1, "My text.", wxDefaultPosition, wxSize(100,60), wxTE_MULTILINE),
+ 1, // make vertically stretchable
+ wxEXPAND | // make horizontally stretchable
+ wxALL, // and make border all around
+ 10 ); // set border width to 10
+
+
+ wxBoxSizer *button_sizer = new wxBoxSizer( wxHORIZONTAL );
+ button_sizer->Add(
+ new wxButton( this, wxID_OK, "OK" ),
+ 0, // make horizontally unstretchable
+ wxALL, // make border all around (implicit top alignment)
+ 10 ); // set border width to 10
+ button_sizer->Add(
+ new wxButton( this, wxID_CANCEL, "Cancel" ),
+ 0, // make horizontally unstretchable
+ wxALL, // make border all around (implicit top alignment)
+ 10 ); // set border width to 10
+
+ topsizer->Add(
+ button_sizer,
+ 0, // make vertically unstretchable
+ wxCENTER ); // no border and centre horizontally
+
+ SetAutoLayout( TRUE ); // tell dialog to use sizer
+ SetSizer( topsizer ); // actually set the sizer
+
+ topsizer->Fit( this ); // set size to minimum size as calculated by the sizer
+ topsizer->SetSizeHints( this ); // set size hints to honour mininum size
+
+}
+\end{verbatim}
\wxheading{Derived from}
\helpref{wxSizer}{wxsizer}
-\wxheading{Data structures}
-
-}
-
\latexignore{\rtfignore{\wxheading{Members}}}
\func{}{wxBoxSizer}{\param{int }{orient}}
+Constructor for a wxBoxSizer. {\it orient} may be either of wxVERTICAL
+or wxHORIZONTAL for creating either a column sizer or a row sizer.
\membersection{wxBoxSizer::RecalcSizes}\label{wxboxsizerrecalcsizes}
{\large {\bf Window layout}}
-\overview{Overview}{constraintsoverview}
+There are two different systems for layouting windows (and dialogs in particluar).
+One is based upon so-called sizers and it requires less typing, thinking and calculating
+and will in almost all cases produce dialogs looking equally well on all platforms, the
+other is based on so-called constraints and allows for more detailed layouts.
-These are the classes relevant to automated window layout.
+These are the classes relevant to the sizer-based layout.
+
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxSizer}{wxsizer}}{Abstract base class}
+\twocolitem{\helpref{wxBoxSizer}{wxboxsizer}}{A sizer for laying out windows in a row or column}
+\twocolitem{\helpref{wxStaticBoxSizer}{wxstaticboxsizer}}{Same as wxBoxSizer, but with surrounding static box}
+\end{twocollist}
+
+\overview{Overview}{constraintsoverview} over the constraints-based layout.
+
+These are the classes relevant to constraints-based window layout.
\begin{twocollist}\itemsep=0pt
\twocolitem{\helpref{wxIndividualLayoutConstraint}{wxindividuallayoutconstraint}}{Represents a single constraint dimension}
\overview{Overview}{ipcoverview}
wxWindows provides a simple interprocess communications facilities
-based on DDE.
+based on DDE. [Note that this is currently work in progress and may not
+function properly.]
\begin{twocollist}\itemsep=0pt
\twocolitem{\helpref{wxDDEClient}{wxddeclient}}{Represents a client}
\input array.tex
\input arrstrng.tex
\input autoobj.tex
+\input boxsizer.tex
\input busycurs.tex
\input busyinfo.tex
\input button.tex
\input sashevt.tex
\input sashlayw.tex
\input sashwin.tex
+\input sbsizer.tex
\input screendc.tex
\input scrolbar.tex
\input scrlwevt.tex
\input sngchdlg.tex
\input size.tex
\input sizeevt.tex
+\input sizer.tex
\input slider.tex
\input sckaddr.tex
\input socket.tex
--- /dev/null
+%
+% automatically generated by HelpGen from
+% include\wx\sizer.h at 13/Aug/99 22:27:59
+%
+
+
+\section{\class{wxStaticBoxSizer}}\label{wxstaticboxsizer}
+
+
+
+wxStaticBoxSizer
+
+
+\wxheading{Derived from}
+
+\helpref{wxBoxSizer}{wxboxsizer}
+
+\wxheading{Data structures}
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
+
+\membersection{wxStaticBoxSizer::wxStaticBoxSizer}\label{wxstaticboxsizerwxstaticboxsizer}
+
+\func{}{wxStaticBoxSizer}{\param{wxStaticBox* }{box}, \param{int }{orient}}
+
+
+\membersection{wxStaticBoxSizer::RecalcSizes}\label{wxstaticboxsizerrecalcsizes}
+
+\func{void}{RecalcSizes}{\void}
+
+
+\membersection{wxStaticBoxSizer::CalcMin}\label{wxstaticboxsizercalcmin}
+
+\func{wxSize}{CalcMin}{\void}
+
+
+\membersection{wxStaticBoxSizer::GetStaticBox}\label{wxstaticboxsizergetstaticbox}
+
+\func{wxStaticBox*}{GetStaticBox}{\void}
+
-%
-% automatically generated by HelpGen from
-% include\wx\sizer.h at 13/Aug/99 22:27:59
-%
-
-
\section{\class{wxSizer}}\label{wxsizer}
-
-
-wxSizer
-
+wxSizer is the abstract base class used for layouting subwindows in a window. You
+cannot use wxSizer directly; instead, you'll have to use \helpref{wxBoxSizer}{wxboxsizer}
+or \helpref{wxStaticBoxSizer}{wxstaticboxsizer}.
+
+The layouting algorithm used by sizers in wxWindows closely related to layouting
+in other GUI toolkits, such as Java's AWT, the GTK toolkit or the Qt toolkit. It is
+based upon the idea of the individual subwindows reporting their minimal required
+size and their ability to get stretched if the size of the parent window has changed.
+This will most often mean, that the programmer does not set the original size of
+the dialog in the beginning, rather the top-most sizer will get queried and it will
+then query its children. Its children can be normal windows or other sizers, so that
+a hierachy of sizer can be constructed. Note that sizer are not derived from wxWindows
+and thus do not interfere with tab ordering and require very little resources compared
+to a real window on screen.
+
+What makes sizers so well fitted for use in wxWindows, is the fact that every control
+reports its own minimal size and the algorithm can handle differences in font sizes
+or different window (dialog item) sizes on different platforms without problems. If e.g.
+the standard font as well as the overall design of Motif widgets requires more space than
+on Windows, the intial dialog size will automatically be bigger on Motif than on Windows.
\wxheading{Derived from}
\helpref{wxObject}{wxobject}
-\wxheading{Data structures}
-
\latexignore{\rtfignore{\wxheading{Members}}}
+++ /dev/null
-%
-% automatically generated by HelpGen from
-% include\wx\sizer.h at 13/Aug/99 22:27:59
-%
-
-
-\section{\class{wxStaticBoxSizer}}\label{wxstaticboxsizer}
-
-
-
-wxStaticBoxSizer
-
-
-\wxheading{Derived from}
-
-\helpref{wxBoxSizer}{wxboxsizer}
-
-\wxheading{Data structures}
-
-\latexignore{\rtfignore{\wxheading{Members}}}
-
-
-\membersection{wxStaticBoxSizer::wxStaticBoxSizer}\label{wxstaticboxsizerwxstaticboxsizer}
-
-\func{}{wxStaticBoxSizer}{\param{wxStaticBox* }{box}, \param{int }{orient}}
-
-
-\membersection{wxStaticBoxSizer::RecalcSizes}\label{wxstaticboxsizerrecalcsizes}
-
-\func{void}{RecalcSizes}{\void}
-
-
-\membersection{wxStaticBoxSizer::CalcMin}\label{wxstaticboxsizercalcmin}
-
-\func{wxSize}{CalcMin}{\void}
-
-
-\membersection{wxStaticBoxSizer::GetStaticBox}\label{wxstaticboxsizergetstaticbox}
-
-\func{wxStaticBox*}{GetStaticBox}{\void}
-
Constructor.
-\membersection{wxTreeEvent::m\_code}
+\membersection{wxTreeEvent::GetItem}
-\member{int}{m\_code}
+\constfunc{wxTreeItemId}{GetItem}{}
-Key code if the event is a keypress event.
+Returns he item (valid for all events).
-\membersection{wxTreeEvent::m\_itemIndex}
+\membersection{wxTreeEvent::GetOldItem}
-\member{wxTreeItem}{m\_item}
+\constfunc{wxTreeItemId}{GetOldItem}{}
-The item (valid for all events).
+Returns the old item index (valid for EVT\_TREE\_ITEM\_CHANGING and CHANGED events)
-\membersection{wxTreeEvent::m\_oldItem}
+\membersection{wxTreeEvent::GetPoint()}
-\member{long}{m\_oldItem}
+\constfunc{wxPoint}{GetPoint}{}
-The old item index (valid for EVT\_TREE\_ITEM\_CHANGING and CHANGED events)
+Returns the position of the mouse pointer if the event is a drag event.
-\membersection{wxTreeEvent::m\_pointDrag}
+\membersection{wxTreeEvent::GetCode}
-\member{wxPoint}{m\_pointDrag}
+\constfunc{int}{GetCode}{}
-The position of the mouse pointer if the event is a drag event.
+The key code if the event was is a key event.
+\membersection{wxTreeEvent::GetLabel}
+
+\constfunc{const wxString&}{GetLabel}{}
+
+Returns the label if the event was a begin or end edit label event.
\helpref{wxWindow::Enable}{wxwindowenable}
-\memebersection{wxWindow:IsExposed}\label{wxwindowisexposed}
+\membersection{wxWindow:IsExposed}\label{wxwindowisexposed}
\constfunc{bool}{IsExposed}{\param{int }{x}, \param{int }{y}}
+\constfunc{bool}{IsExposed}{\param{wxPoint }{&pt}}
+
\constfunc{bool}{IsExposed}{\param{int }{x}, \param{int }{y}, \param{int }{w}, \param{int }{h}}
+\constfunc{bool}{IsExposed}{\param{wxRectangle }{&rect}}
+
Returns TRUE if the given point or rectange area has been exposed since the
last repaint. Call this in an paint event handler to optimize redrawing by
only redrawing those area, which have been exposed.
\func{void}{Layout}{\void}
-Invokes the constraint-based layout algorithm for this window.
+Invokes the constraint-based layout algorithm or the sizer-based algorithm
+for this window.
See \helpref{wxWindow::SetAutoLayout}{wxwindowsetautolayout} on when
this function gets called automatically using auto layout.
\func{void}{SetAutoLayout}{\param{const bool}{ autoLayout}}
Determines whether the \helpref{wxWindow::Layout}{wxwindowlayout} function will
-be called automatically when the window is resized.
+be called automatically when the window is resized. Use in connection with
+\helpref{wxWindow::SetSizer}{wxwindowsetsizer} and
+\helpref{wxWindow::SetConstraints}{wxwindowsetconstraints} for layouting subwindows.
\wxheading{Parameters}
\wxheading{Remarks}
You must call \helpref{wxWindow::SetAutoLayout}{wxwindowsetautolayout} to tell a window to use
-the constraints automatically in OnSize; otherwise, you must
-override OnSize and call Layout explicitly.
+the constraints automatically in OnSize; otherwise, you must override OnSize and call Layout()
+explicitly. When setting both a wxLayoutConstraints and a \helpref{wxSizer}{wxsizer}, only the
+sizer will have effect.
\membersection{wxWindow::SetDropTarget}\label{wxwindowsetdroptarget}
The resizing increments are only significant under Motif or Xt.
+\membersection{wxWindow::SetSizer}\label{wxwindowsetsizer}
+
+\func{void}{SetSizer}{\param{wxSizer* }{sizer}}
+
+Sets the window to have the given layout sizer. The window
+will then own the object, and will take care of its deletion.
+If an existing layout constraints object is already owned by the
+window, it will be deleted.
+
+\wxheading{Parameters}
+
+\docparam{sizer}{The sizer to set. Pass NULL to disassociate and delete the window's
+sizer.}
+
+\wxheading{Remarks}
+
+You must call \helpref{wxWindow::SetAutoLayout}{wxwindowsetautolayout} to tell a window to use
+the sizer automatically in OnSize; otherwise, you must override OnSize and call Layout()
+explicitly. When setting both a wxSizer and a \helpref{wxLayoutConstraints}{wxlayoutconstraints},
+only the sizer will have effect.
+
\membersection{wxWindow::SetTitle}\label{wxwindowsettitle}
\func{virtual void}{SetTitle}{\param{const wxString\& }{title}}
projects / wxWidgets.git / commitdiff
