X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3eddf563edad7403f84906650506370f4f7dedb2..d45d30c8682f858321600e2958167d7ef54ebeb5:/docs/latex/wx/window.tex diff --git a/docs/latex/wx/window.tex b/docs/latex/wx/window.tex index e267566210..9e3be209fa 100644 --- a/docs/latex/wx/window.tex +++ b/docs/latex/wx/window.tex @@ -1,8 +1,15 @@ \section{\class{wxWindow}}\label{wxwindow} -wxWindow is the base class for all windows. Any -children of the window will be deleted automatically by the destructor -before the window itself is deleted. +wxWindow is the base class for all windows. Any children of the window will be deleted +automatically by the destructor before the window itself is deleted. + +Please note that we documented a number of handler functions (OnChar(), OnMouse() etc.) in this +help text. These must not be called by a user program and are documented only for illustration. +On several platforms, only a few of these handlers are actually written (they are not always +needed) and if you are uncertain on how to add a certain behaviour to a window class, intercept +the respective event as usual and call \helpref{wxEvent::Skip}{wxeventskip} so that the native +platform can implement its native behaviour or just ignore the event if nothing needs to be +done. \wxheading{Derived from} @@ -16,25 +23,33 @@ before the window itself is deleted. \wxheading{Window styles} The following styles can apply to all windows, although they will not always make sense for a particular -window class. +window class or on all platforms. \twocolwidtha{5cm}% \begin{twocollist}\itemsep=0pt \twocolitem{\windowstyle{wxSIMPLE\_BORDER}}{Displays a thin border around the window. wxBORDER is the old name -for this style.} +for this style. } \twocolitem{\windowstyle{wxDOUBLE\_BORDER}}{Displays a double border. Windows only.} \twocolitem{\windowstyle{wxSUNKEN\_BORDER}}{Displays a sunken border.} -\twocolitem{\windowstyle{wxRAISED\_BORDER}}{Displays a raised border.} -\twocolitem{\windowstyle{wxSTATIC\_BORDER}}{Displays a border suitable for a static control.} +\twocolitem{\windowstyle{wxRAISED\_BORDER}}{Displays a raised border. GTK only. } +\twocolitem{\windowstyle{wxSTATIC\_BORDER}}{Displays a border suitable for a static control. Windows only. } \twocolitem{\windowstyle{wxTRANSPARENT\_WINDOW}}{The window is transparent, that is, it will not receive paint events. Windows only.} \twocolitem{\windowstyle{wxNO\_3D}}{Prevents the children of this window taking on 3D styles, even though the application-wide policy is for 3D controls. Windows only.} \twocolitem{\windowstyle{wxTAB\_TRAVERSAL}}{Use this to enable tab traversal for non-dialog windows.} -\twocolitem{\windowstyle{wxVSCROLL}}{Use this style to enable a vertical scrollbar.} -\twocolitem{\windowstyle{wxHSCROLL}}{Use this style to enable a horizontal scrollbar.} +\twocolitem{\windowstyle{wxWANTS\_CHARS}}{Use this to indicate that the window +wants to get all char events - even for keys like TAB or ENTER which are +usually used for dialog navigation and which wouldn't be generated without +this style} +\twocolitem{\windowstyle{wxNO\_FULLREPAINT\_ON\_RESIZE}}{Disables repainting +the window completely when its size is changed - you will have to repaint the +new window area manually if you use style. Currently only has effect for +Windows.} +\twocolitem{\windowstyle{wxVSCROLL}}{Use this style to enable a vertical scrollbar. (Still used?) } +\twocolitem{\windowstyle{wxHSCROLL}}{Use this style to enable a horizontal scrollbar. (Still used?) } \twocolitem{\windowstyle{wxCLIP\_CHILDREN}}{Use this style to eliminate flicker caused by the background being -repainted, then children being painted over them. Windows-only.} +repainted, then children being painted over them. Windows only.} \end{twocollist} See also \helpref{window styles overview}{windowstyles}. @@ -70,7 +85,9 @@ should generate a default position for the window. If using the wxWindow class d an actual position.} \docparam{size}{Window size. wxDefaultSize is (-1, -1) which indicates that wxWindows -should generate a default size for the window.} +should generate a default size for the window. If no suitable size can be found, the +window will be sized to 20x20 pixels so that the window is visible but obviously not +correctly sized. } \docparam{style}{Window style. For generic window styles, please see \helpref{wxWindow}{wxwindow}.} @@ -120,27 +137,58 @@ release the capture. A synonym for \helpref{Centre}{wxwindowcentre}. +\membersection{wxWindow::CenterOnParent}\label{wxwindowcenteronparent} + +\func{void}{CenterOnParent}{\param{int}{ direction}} + +A synonym for \helpref{CentreOnParent}{wxwindowcentreonparent}. + \membersection{wxWindow::Centre}\label{wxwindowcentre} -\func{virtual void}{Centre}{\param{int}{ direction = wxHORIZONTAL}} +\func{void}{Centre}{\param{int}{ direction = wxHORIZONTAL}} Centres the window. \wxheading{Parameters} \docparam{direction}{Specifies the direction for the centering. May be {\tt wxHORIZONTAL}, {\tt wxVERTICAL}\rtfsp -or {\tt wxBOTH}.} +or {\tt wxBOTH}. It may also include {\tt wxCENTRE\_ON\_SCREEN} flag +if you want to center the window on the entire screen and not on its +parent window.} + +The flag {\tt wxCENTRE\_FRAME} is obsolete and should not be used any longer. \wxheading{Remarks} -The actual behaviour depends on the derived window. For a frame or dialog box, -centring is relative to the whole display. For a panel item, centring is -relative to the panel. +If the window is a top level one (i.e. doesn't have a parent), it will be +centered relative to the screen anyhow. \wxheading{See also} \helpref{wxWindow::Center}{wxwindowcenter} +\membersection{wxWindow::CentreOnParent}\label{wxwindowcentreonparent} + +\func{void}{CentreOnParent}{\param{int}{ direction = wxHORIZONTAL}} + +Centres the window. + +\wxheading{Parameters} + +\docparam{direction}{Specifies the direction for the centering. May be {\tt wxHORIZONTAL}, {\tt wxVERTICAL}\rtfsp +or {\tt wxBOTH}.} + +\wxheading{Remarks} + +This methods provides for a way to center top level windows over their +parents instead of the entire screen. If there is no parent or if the +window is not a top level window, then behaviour is the same as +\helpref{wxWindow::Centre}{wxwindowcentre}. + +\wxheading{See also} + +\helpref{wxWindow::CenterOnParent}{wxwindowcenteronparent} + \membersection{wxWindow::Clear}\label{wxwindowclear} \func{void}{Clear}{\void} @@ -251,9 +299,9 @@ implements the following methods:\par Additionally, the following helper functions are defined:\par \indented{2cm}{\begin{twocollist} -\twocolitem{\bf{wxDLG_PNT(win, point)}}{Converts a wxPoint from dialog +\twocolitem{\bf{wxDLG\_PNT(win, point)}}{Converts a wxPoint from dialog units to pixels} -\twocolitem{\bf{wxDLG_SZE(win, size)}}{Converts a wxSize from dialog +\twocolitem{\bf{wxDLG\_SZE(win, size)}}{Converts a wxSize from dialog units to pixels} \end{twocollist}} } @@ -515,7 +563,9 @@ Returns the grandparent of a window, or NULL if there isn't one. \constfunc{void*}{GetHandle}{\void} Returns the platform-specific handle of the physical window. Cast it to an appropriate -handle, such as {\bf HWND} for Windows or {\bf Widget} for Motif. +handle, such as {\bf HWND} for Windows, {\bf Widget} for Motif or {\bf GtkWidget} for GTK. + +\pythonnote{This method will return an integer in wxPython.} \membersection{wxWindow::GetId}\label{wxwindowgetid} @@ -525,8 +575,8 @@ Returns the identifier of the window. \wxheading{Remarks} -Each window has an integer identifier. If the application has not provided one, -an identifier will be generated. +Each window has an integer identifier. If the application has not provided one +(or the default Id -1) an unique identifier with a negative value will be generated. \wxheading{See also} @@ -556,7 +606,7 @@ implements the following methods:\par \membersection{wxWindow::GetLabel} -\constfunc{virtual wxString\& }{GetLabel}{\void} +\constfunc{virtual wxString }{GetLabel}{\void} Generic way of getting a label from any window, for identification purposes. @@ -571,7 +621,7 @@ by name. \membersection{wxWindow::GetName}\label{wxwindowgetname} -\constfunc{virtual wxString\& }{GetName}{\void} +\constfunc{virtual wxString }{GetName}{\void} Returns the window's name. @@ -596,22 +646,6 @@ Returns the parent of the window, or NULL if there is no parent. Returns the size and position of the window as a \helpref{wxRect}{wxrect} object. -\membersection{wxWindow::GetReturnCode}\label{wxwindowgetreturncode} - -\func{int}{GetReturnCode}{\void} - -Gets the return code for this window. - -\wxheading{Remarks} - -A return code is normally associated with a modal dialog, where \helpref{wxDialog::ShowModal}{wxdialogshowmodal} returns -a code to the application. - -\wxheading{See also} - -\helpref{wxWindow::SetReturnCode}{wxwindowsetreturncode}, \helpref{wxDialog::ShowModal}{wxdialogshowmodal},\rtfsp -\helpref{wxDialog::EndModal}{wxdialogendmodal} - \membersection{wxWindow::GetScrollThumb}\label{wxwindowgetscrollthumb} \func{virtual int}{GetScrollThumb}{\param{int }{orientation}} @@ -721,11 +755,18 @@ only be called within an \helpref{OnPaint}{wxwindowonpaint} event handler. \helpref{wxRegion}{wxregion}, \helpref{wxRegionIterator}{wxregioniterator}, \helpref{wxWindow::OnPaint}{wxwindowonpaint} +\membersection{wxWindow::GetValidator}\label{wxwindowgetvalidator} + +\constfunc{wxValidator*}{GetValidator}{\void} + +Returns a pointer to the current validator for the window, or NULL if there is none. + \membersection{wxWindow::GetWindowStyleFlag} \constfunc{long}{GetWindowStyleFlag}{\void} Gets the window style that was passed to the consructor or {\bf Create} member. +{\bf GetWindowStyle} is synonymous. \membersection{wxWindow::InitDialog}\label{wxwindowinitdialog} @@ -748,6 +789,20 @@ Returns TRUE if the window is enabled for input, FALSE otherwise. \helpref{wxWindow::Enable}{wxwindowenable} +\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{wxRect }{&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 areas, which have been exposed. + \membersection{wxWindow::IsRetained}\label{wxwindowisretained} \constfunc{virtual bool}{IsRetained}{\void} @@ -764,12 +819,23 @@ Retained windows are only available on X platforms. Returns TRUE if the window is shown, FALSE if it has been hidden. +\membersection{wxWindow::IsTopLevel}\label{wxwindowistoplevel} + +\constfunc{bool}{IsTopLevel}{\void} + +Returns TRUE if the given window is a top-level one. Currently all frames and +dialogs are considered to be top-level windows (even if they have a parent +window). + \membersection{wxWindow::Layout}\label{wxwindowlayout} \func{void}{Layout}{\void} -Invokes the constraint-based layout algorithm for this window. It is called -automatically by the default {\bf wxWindow::OnSize} member. +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. \membersection{wxWindow::LoadFromResource}\label{wxwindowloadfromresource} @@ -803,7 +869,8 @@ or frame). \func{virtual void}{MakeModal}{\param{const bool }{flag}} Disables all other windows in the application so that -the user can only interact with this window. +the user can only interact with this window. (This function +is not implemented anywhere). \wxheading{Parameters} @@ -925,7 +992,9 @@ Note that the ASCII values do not have explicit key codes: they are passed as AS values. This function is only relevant to top-level windows (frames and dialogs), and under -Windows only. +Windows only. Under GTK the normal EVT\_CHAR\_ event has the functionality, i.e. +you can intercepts it and if you don't call \helpref{wxEvent::Skip}{wxeventskip} +the window won't get the event. \wxheading{See also} @@ -1057,7 +1126,9 @@ Called when the background of the window needs to be erased. \wxheading{Remarks} -This event is only generated under Windows. +This event is only generated under Windows. It is therefore recommended that +you set the text background colour explicitly in order to prevent flicker. +The default background colour under GTK is grey. To intercept this event, use the EVT\_ERASE\_BACKGROUND macro in an event table definition. @@ -1355,9 +1426,9 @@ void MyWindow::OnPaint(wxPaintEvent& event) \membersection{wxWindow::OnScroll}\label{wxwindowonscroll} -\func{void}{OnScroll}{\param{wxScrollEvent\& }{event}} +\func{void}{OnScroll}{\param{wxScrollWinEvent\& }{event}} -Called when a scroll event is received from one of the window's built-in scrollbars. +Called when a scroll window event is received from one of the window's built-in scrollbars. \wxheading{Parameters} @@ -1373,7 +1444,7 @@ for horizontal events). \wxheading{See also} -\helpref{wxScrollEvent}{wxscrollevent},\rtfsp +\helpref{wxScrollWinEvent}{wxscrollwinevent},\rtfsp \helpref{Event handling overview}{eventhandlingoverview} \membersection{wxWindow::OnSetFocus}\label{wxwindowonsetfocus} @@ -1424,7 +1495,7 @@ used by the application. \func{void}{OnSysColourChanged}{\param{wxOnSysColourChangedEvent\& }{event}} -Called when the user has changed the system colours. +Called when the user has changed the system colours. Windows only. \wxheading{Parameters} @@ -1456,18 +1527,21 @@ default value is FALSE.} \membersection{wxWindow::PopupMenu}\label{wxwindowpopupmenu} -\func{virtual bool}{PopupMenu}{\param{wxMenu* }{menu}, \param{int }{x}, \param{int }{y}} +\func{bool}{PopupMenu}{\param{wxMenu* }{menu}, \param{const wxPoint& }{pos}} + +\func{bool}{PopupMenu}{\param{wxMenu* }{menu}, \param{int }{x}, \param{int }{y}} Pops up the given menu at the specified coordinates, relative to this window, and returns control when the user has dismissed the menu. If a -menu item is selected, the callback defined for the menu is called with -wxMenu and wxCommandEvent reference arguments. The callback should access -the commandInt member of the event to check the selected menu identifier. +menu item is selected, the corresponding menu event is generated and will be +processed as usually. \wxheading{Parameters} \docparam{menu}{Menu to pop up.} +\docparam{pos}{The position where the menu will appear.} + \docparam{x}{Required x position for the menu to appear.} \docparam{y}{Required y position for the menu to appear.} @@ -1479,7 +1553,16 @@ the commandInt member of the event to check the selected menu identifier. \wxheading{Remarks} Just before the menu is popped up, \helpref{wxMenu::UpdateUI}{wxmenuupdateui} is called -to ensure that the menu items are in the correct state. +to ensure that the menu items are in the correct state. The menu does not get deleted +by the window. + +\pythonnote{In place of a single overloaded method name, wxPython +implements the following methods:\par +\indented{2cm}{\begin{twocollist} +\twocolitem{\bf{PopupMenu(menu, point)}}{Specifies position with a wxPoint} +\twocolitem{\bf{PopupMenuXY(menu, x, y)}}{Specifies position with two integers (x, y)} +\end{twocollist}} +} \membersection{wxWindow::PushEventHandler}\label{wxwindowpusheventhandler} @@ -1556,6 +1639,19 @@ functions so should not be required by the application programmer. \docparam{child}{Child window to remove.} +\membersection{wxWindow::Reparent}\label{wxwindowreparent} + +\func{virtual bool}{Reparent}{\param{wxWindow* }{newParent}} + +Reparents the window, i.e the window will be removed from its +current parent window (e.g. a non-standard toolbar in a wxFrame) +and then re-inserted into another (e.g. a wxMiniFrame for a +floating toolbar). Available on Windows and GTK+. + +\wxheading{Parameters} + +\docparam{newParent}{New parent.} + \membersection{wxWindow::ScreenToClient}\label{wxwindowscreentoclient} \constfunc{virtual void}{ScreenToClient}{\param{int* }{x}, \param{int* }{y}} @@ -1585,7 +1681,7 @@ implements the following methods:\par \func{virtual void}{ScrollWindow}{\param{int }{dx}, \param{int }{dy}, \param{const wxRect*}{ rect = NULL}} -Physically scrolls the pixels in the window. +Physically scrolls the pixels in the window and move child windows accordingly. \wxheading{Parameters} @@ -1595,14 +1691,13 @@ Physically scrolls the pixels in the window. \docparam{rect}{Rectangle to invalidate. If this is NULL, the whole window is invalidated. If you pass a rectangle corresponding to the area of the window exposed by the scroll, your painting handler -can optimise painting by checking for the invalidated region.} +can optimise painting by checking for the invalidated region. This paramter is ignored under GTK, +instead the regions to be invalidated are calculated automatically. } \wxheading{Remarks} -Available only under Windows. - Use this function to optimise your scrolling implementations, to minimise the area that must be -redrawn. +redrawn. Note that it is rarely required to call this function from a user program. \membersection{wxWindow::SetAcceleratorTable}\label{wxwindowsetacceleratortable} @@ -1615,13 +1710,23 @@ Sets the accelerator table for this window. See \helpref{wxAcceleratorTable}{wxa \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} \docparam{autoLayout}{Set this to TRUE if you wish the Layout function to be called from within wxWindow::OnSize functions.} +\wxheading{Remarks} + +Note that this function is actually disabled for wxWindow. It has +effect for wxDialog, wxFrame, wxPanel and wxScrolledWindow. Windows +of other types that need to invoke the Layout algorithm should provide +an EVT_SIZE handler and call +\helpref{wxWindow::Layout}{wxwindowlayout} from within it. + \wxheading{See also} \helpref{wxWindow::SetConstraints}{wxwindowsetconstraints} @@ -1639,12 +1744,17 @@ Sets the background colour of the window. \wxheading{Remarks} The background colour is usually painted by the default\rtfsp -\helpref{wxWindow::OnEraseBackground}{wxwindowonerasebackground} event handler function. +\helpref{wxWindow::OnEraseBackground}{wxwindowonerasebackground} event handler function +under Windows and automatically under GTK. Note that setting the background colour does not cause an immediate refresh, so you may wish to call \helpref{wxWindow::Clear}{wxwindowclear} or \helpref{wxWindow::Refresh}{wxwindowrefresh} after calling this function. +Note that when using this functions under GTK, you will disable the so called "themes", +i.e. the user chosen apperance of windows and controls, including the themes of +their parent windows. + \wxheading{See also} \helpref{wxWindow::GetBackgroundColour}{wxwindowgetbackgroundcolour},\rtfsp @@ -1744,8 +1854,9 @@ constraints.} \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} @@ -1796,6 +1907,10 @@ The interpretation of foreground colour is open to interpretation according to the window class; it may be the text colour or other colour, or it may not be used at all. +Note that when using this functions under GTK, you will disable the so called "themes", +i.e. the user chosen apperance of windows and controls, including the themes of +their parent windows. + \wxheading{See also} \helpref{wxWindow::GetForegroundColour}{wxwindowgetforegroundcolour},\rtfsp @@ -1839,26 +1954,6 @@ Sets the window's name. Obsolete - use \helpref{wxDC::SetPalette}{wxdcsetpalette} instead. -\membersection{wxWindow::SetReturnCode}\label{wxwindowsetreturncode} - -\func{void}{SetReturnCode}{\param{int }{retCode}} - -Sets the return code for this window. - -\wxheading{Parameters} - -\docparam{retCode}{The integer return code, usually a control identifier.} - -\wxheading{Remarks} - -A return code is normally associated with a modal dialog, where \helpref{wxDialog::ShowModal}{wxdialogshowmodal} returns -a code to the application. The function \helpref{wxDialog::EndModal}{wxdialogendmodal} calls {\bf SetReturnCode}. - -\wxheading{See also} - -\helpref{wxWindow::GetReturnCode}{wxwindowgetreturncode}, \helpref{wxDialog::ShowModal}{wxdialogshowmodal},\rtfsp -\helpref{wxDialog::EndModal}{wxdialogendmodal} - \membersection{wxWindow::SetScrollbar}\label{wxwindowsetscrollbar} \func{virtual void}{SetScrollbar}{\param{int }{orientation}, \param{int }{position},\rtfsp @@ -2104,6 +2199,27 @@ given bounds. 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}} @@ -2118,7 +2234,14 @@ Sets the window's title. Applicable only to frames and dialogs. \helpref{wxWindow::GetTitle}{wxwindowgettitle} -\membersection{wxWindow::Show} +\membersection{wxWindow::SetValidator}\label{wxwindowsetvalidator} + +\func{virtual void}{SetValidator}{\param{const wxValidator\&}{ validator}} + +Deletes the current validator (if any) and sets the window validator, having called wxValidator::Clone to +create a new validator of this type. + +\membersection{wxWindow::Show}\label{wxwindowshow} \func{virtual bool}{Show}{\param{const bool}{ show}}