\section{\class{wxIcon}}\label{wxicon}
An icon is a small rectangular bitmap usually used for denoting a
-minimized application.
+minimized application. It differs from a wxBitmap in always
+having a mask associated with it for transparent drawing. On some platforms,
+icons and bitmaps are implemented identically, since there is no real distinction between
+a wxBitmap with a mask and an icon; and there is no specific icon format on
+some platforms (X-based applications usually standardize on XPMs for small bitmaps
+and icons). However, some platforms (such as Windows) make the distinction, so
+a separate class is provided.
+
+\wxheading{Derived from}
+
+\helpref{wxBitmap}{wxbitmap}\\
+\helpref{wxGDIObject}{wxgdiobject}\\
+\helpref{wxObject}{wxobject}
+
+\wxheading{Include files}
+
+<wx/icon.h>
+
+\wxheading{Predefined objects}
+
+Objects:
+
+{\bf wxNullIcon}
\wxheading{Remarks}
-It is optional (but desirable) to associate a
-pertinent icon with a frame. Obviously icons in X and MS Windows are
-created in a different manner, and colour icons in X are difficult
-to arrange. Therefore, separate icons will be created for the different
+It is usually desirable to associate a pertinent icon with a frame. Icons
+can also be used for other purposes, for example with \helpref{wxTreeCtrl}{wxtreectrl}
+and \helpref{wxListCtrl}{wxlistctrl}.
+
+Icons have different formats on different platforms.
+Therefore, separate icons will usually be created for the different
environments. Platform-specific methods for creating a {\bf wxIcon}\rtfsp
structure are catered for, and this is an occasion where conditional
compilation will probably be required.
Note that a new icon must be created for every time the icon is to be
-used for a new window. In X, this will ensure that fresh X resources
-are allocated for this frame. In MS Windows, the icon will not be
+used for a new window. In Windows, the icon will not be
reloaded if it has already been used. An icon allocated to a frame will
be deleted when the frame is deleted.
-The following shows the conditional compilation required to define an
-icon in X and in MS Windows. The alternative is to use the string
-version of the icon constructor, which loads a file under X and a
-resource under MS Windows, but has the disadvantage of requiring the
-X icon file to be available at run-time.
-
-\begin{verbatim}
-#ifdef wx_x
-#include "aiai.xbm"
-#endif
-#ifdef wx_msw
- wxIcon *icon = new wxIcon("aiai");
-#endif
-#ifdef wx_x
- wxIcon *icon = new wxIcon(aiai_bits, aiai_width, aiai_height);
-#endif
-\end{verbatim}
-
-\wxheading{Derived from}
-
-\helpref{wxBitmap}{wxbitmap}\\
-\helpref{wxGDIObject}{wxgdiobject}\\
-\helpref{wxObject}{wxobject}
+For more information please see \helpref{Bitmap and icon overview}{wxbitmapoverview}.
\wxheading{See also}
-\helpref{wxIcon overview}{wxiconoverview}, \helpref{wxDC::DrawIcon}{wxdcdrawicon}, \helpref{wxCursor}{wxcursor}
+\helpref{Bitmap and icon overview}{wxbitmapoverview}, \helpref{supported bitmap file formats}{supportedbitmapformats},
+\helpref{wxDC::DrawIcon}{wxdcdrawicon}, \helpref{wxCursor}{wxcursor}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxIcon::wxIcon}\label{wxiconconstr}
+\membersection{wxIcon::wxIcon}\label{wxiconctor}
\func{}{wxIcon}{\void}
Creates a new icon.
+\func{}{wxIcon}{\param{char**}{ bits}}
+
\func{}{wxIcon}{\param{const char**}{ bits}}
Creates an icon from XPM data.
-\func{}{wxIcon}{\param{const wxString\& }{name}, \param{long}{ type}}
+\func{}{wxIcon}{\param{const wxString\& }{name}, \param{wxBitmapType}{ type},
+ \param{int}{ desiredWidth = -1}, \param{int}{ desiredHeight = -1}}
Loads an icon from a file or resource.
+\func{}{wxIcon}{\param{const wxIconLocation\& }{loc}}
+
+Loads an icon from the specified \helpref{location}{wxiconlocation}.
+
\wxheading{Parameters}
\docparam{bits}{Specifies an array of pixel values.}
\docparam{height}{Specifies the height of the icon.}
+\docparam{desiredWidth}{Specifies the desired width of the icon. This
+parameter only has an effect in Windows (32-bit) where icon resources can contain
+several icons of different sizes.}
+
+\docparam{desiredWidth}{Specifies the desired height of the icon. This
+parameter only has an effect in Windows (32-bit) where icon resources can contain
+several icons of different sizes.}
+
\docparam{depth}{Specifies the depth of the icon. If this is omitted, the display depth of the
screen is used.}
\docparam{name}{This can refer to a resource name under MS Windows, or a filename under MS Windows and X.
Its meaning is determined by the {\it flags} parameter.}
+\docparam{loc}{The object describing the location of the native icon, see
+\helpref{wxIconLocation}{wxiconlocation}.}
+
\docparam{type}{May be one of the following:
\twocolwidtha{5cm}
\begin{twocollist}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_ICO}}}{Load a Windows icon file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_ICO\_RESOURCE}}}{Load a Windows icon from the resource database.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_GIF}}}{Load a GIF bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_XBM}}}{Load an X bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_XPM}}}{Load an XPM bitmap file.}
-%\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_RESOURCE}}}{Load a Windows resource name.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_ICO}}{Load a Windows icon file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_ICO\_RESOURCE}}{Load a Windows icon from the resource database.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_GIF}}{Load a GIF bitmap file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_XBM}}{Load an X bitmap file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_XPM}}{Load an XPM bitmap file.}
+%\twocolitem{\indexit{wxBITMAP\_TYPE\_RESOURCE}}{Load a Windows resource name.}
\end{twocollist}
-The validity of these flags depends on the platform and wxWindows configuration.
-If all possible wxWindows settings are used, the Windows platform supports ICO, ICO\_RESOURCE,
-XPM\_DATA, and XPM. Under X, the available formats are BMP, GIF, XBM, and XPM.}
+The validity of these flags depends on the platform and wxWidgets configuration.
+If all possible wxWidgets settings are used, the Windows platform supports ICO file, ICO resource,
+XPM data, and XPM file. Under wxGTK, the available formats are BMP file, XPM data, XPM file, and PNG file.
+Under wxMotif, the available formats are XBM data, XBM file, XPM data, XPM file.}
\wxheading{Remarks}
The sixth form constructs a new icon.
-The seventh form constructs an icon from pixmap (XPM) data, if wxWindows has been configured
+The seventh form constructs an icon from pixmap (XPM) data, if wxWidgets has been configured
to incorporate this feature.
To use this constructor, you must first include an XPM file. For
wxIcon *icon = new wxIcon(mybitmap);
\end{verbatim}
-The eighth form constructs an icon from a file or resource. {\it name} can refer
-to a resource name under MS Windows, or a filename under MS Windows and X.
-
-Under Windows, {\it type} defaults to wxBITMAP\_TYPE\_ICO\_RESOURCE.
-Under X, {\it type} defaults to wxBITMAP\_TYPE\_XBM.
-
-\wxheading{See also}
-
-\helpref{wxIcon::LoadFile}{wxiconloadfile}
-
-\membersection{wxIcon::\destruct{wxIcon}}
-
-\func{}{\destruct{wxIcon}}{\void}
-
-Destroys the wxIcon object and possibly the underlying icon data.
-Because reference counting is used, the icon may not actually be
-destroyed at this point - only when the reference count is zero will the
-data be deleted.
-
-If the application omits to delete the icon explicitly, the icon will be
-destroyed automatically by wxWindows when the application exits.
+A macro, wxICON, is available which creates an icon using an XPM
+on the appropriate platform, or an icon resource on Windows.
-Do not delete an icon that is selected into a memory device context.
+\begin{verbatim}
+wxIcon icon(wxICON(mondrian));
-\begin{comment}
-\membersection{wxIcon::Create}\label{wxiconcreate}
+// Equivalent to:
-\func{virtual bool}{Create}{\param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
+#if defined(__WXGTK__) || defined(__WXMOTIF__)
+wxIcon icon(mondrian_xpm);
+#endif
-Creates a fresh icon. If the final argument is omitted, the display depth of
-the screen is used.
+#if defined(__WXMSW__)
+wxIcon icon("mondrian");
+#endif
+\end{verbatim}
-\func{virtual bool}{Create}{\param{void*}{ data}, \param{int}{ type}, \param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
+The eighth form constructs an icon from a file or resource. {\it name} can refer
+to a resource name under MS Windows, or a filename under MS Windows and X.
-Creates an icon from the given data, which can be of arbitrary type.
+Under Windows, {\it type} defaults to wxBITMAP\_TYPE\_ICO\_RESOURCE.
+Under X, {\it type} defaults to wxBITMAP\_TYPE\_XPM.
-\wxheading{Parameters}
+\wxheading{See also}
-\docparam{width}{The width of the icon in pixels.}
-\docparam{height}{The height of the icon in pixels.}
+\membersection{wxIcon::CopyFromBitmap}\label{wxiconcopyfrombitmap}
-\docparam{depth}{The depth of the icon in pixels. If this is -1, the screen depth is used.}
+\func{void}{CopyFromBitmap}{\param{const wxBitmap\&}{ bmp}}
-\docparam{data}{Data whose type depends on the value of {\it type}.}
+Copies {\it bmp} bitmap to this icon. Under MS Windows the bitmap
+must have mask colour set.
-\docparam{type}{An icon type identifier - see \helpref{wxIcon::wxIcon}{wxiconconstr} for a list
-of possible values.}
-\wxheading{Return value}
+\helpref{wxIcon::LoadFile}{wxiconloadfile}
-TRUE if the call succeeded, FALSE otherwise.
+\perlnote{Constructors supported by wxPerl are:\par
+\begin{itemize}
+\item{Wx::Icon->new( width, height, depth = -1 )}
+\item{Wx::Icon->new( name, type, desiredWidth = -1, desiredHeight = -1 )}
+\item{Wx::Icon->newFromBits( bits, width, height, depth = 1 )}
+\item{Wx::Icon->newFromXPM( data )}
+\end{itemize}
+}
-\wxheading{Remarks}
+\membersection{wxIcon::\destruct{wxIcon}}\label{wxicondtor}
-The first form works on all platforms. The portability of the second form depends on the
-type of data.
+\func{}{\destruct{wxIcon}}{\void}
-\wxheading{See also}
+Destructor.
+See \helpref{reference-counted object destruction}{refcountdestruct} for more info.
-\helpref{wxIcon::wxIcon}{wxiconconstr}
+If the application omits to delete the icon explicitly, the icon will be
+destroyed automatically by wxWidgets when the application exits.
-\end{comment}
+Do not delete an icon that is selected into a memory device context.
-\membersection{wxIcon::GetDepth}
+\membersection{wxIcon::GetDepth}\label{wxicongetdepth}
\constfunc{int}{GetDepth}{\void}
\membersection{wxIcon::LoadFile}\label{wxiconloadfile}
-\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{long}{ type}}
+\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{wxBitmapType}{ type}}
Loads an icon from a file or resource.
\twocolitem{{\bf wxBITMAP\_TYPE\_XPM}}{Load an XPM bitmap file.}
\end{twocollist}
-The validity of these flags depends on the platform and wxWindows configuration.}
+The validity of these flags depends on the platform and wxWidgets configuration.}
\wxheading{Return value}
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
\wxheading{See also}
-\helpref{wxIcon::wxIcon}{wxiconconstr}
+\helpref{wxIcon::wxIcon}{wxiconctor}
-\membersection{wxIcon::Ok}\label{wxiconok}
+\membersection{wxIcon::IsOk}\label{wxiconisok}
-\constfunc{bool}{Ok}{\void}
+\constfunc{bool}{IsOk}{\void}
-Returns TRUE if icon data is present.
+Returns true if icon data is present.
\begin{comment}
\membersection{wxIcon::SaveFile}\label{wxiconsavefile}
-\func{bool}{SaveFile}{\param{const wxString\& }{name}, \param{int}{ type}, \param{wxPalette* }{palette = NULL}}
+\func{bool}{SaveFile}{\param{const wxString\& }{name}, \param{wxBitmapType}{ type}, \param{wxPalette* }{palette = NULL}}
Saves an icon in the named file.
\twocolitem{{\bf wxBITMAP\_TYPE\_XPM}}{Save an XPM bitmap file.}
\end{twocollist}
-The validity of these flags depends on the platform and wxWindows configuration.}
+The validity of these flags depends on the platform and wxWidgets configuration.}
-\docparam{palette}{An optional palette used for saving the icon. TODO: this parameter should
-probably be eliminated; instead the app should set the palette before saving.}
+\docparam{palette}{An optional palette used for saving the icon.}
\wxheading{Return value}
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
\wxheading{Remarks}
-Depending on how wxWindows has been configured, not all formats may be available.
+Depending on how wxWidgets has been configured, not all formats may be available.
\wxheading{See also}
\docparam{height}{Icon height in pixels.}
-\membersection{wxIcon::SetOk}
-
-\func{void}{SetOk}{\param{int }{isOk}}
-
-Sets the validity member (does not affect the icon data).
-
-\wxheading{Parameters}
-
-\docparam{isOk}{Validity flag.}
-
-\membersection{wxIcon::SetWidth}
+\membersection{wxIcon::SetWidth}\label{wxiconsetwidth}
\func{void}{SetWidth}{\param{int }{width}}
\docparam{width}{Icon width in pixels.}
-\membersection{wxIcon::operator $=$}
+\membersection{wxIcon::operator $=$}\label{wxiconassign}
\func{wxIcon\& }{operator $=$}{\param{const wxIcon\& }{icon}}
-Assignment operator. This operator does not copy any data, but instead
-passes a pointer to the data in {\it icon} and increments a reference
-counter. It is a fast operation.
+Assignment operator, using \helpref{reference counting}{trefcount}.
\wxheading{Parameters}
Returns 'this' object.
-\membersection{wxIcon::operator $==$}
-
-\func{bool}{operator $==$}{\param{const wxIcon\& }{icon}}
-
-Equality operator. This operator tests whether the internal data pointers are
-equal (a fast test).
-
-\wxheading{Parameters}
-
-\docparam{icon}{Icon to compare with 'this'}
-
-\wxheading{Return value}
-
-Returns TRUE if the icons were effectively equal, FALSE otherwise.
-
-\membersection{wxIcon::operator $!=$}
-
-\func{bool}{operator $!=$}{\param{const wxIcon\& }{icon}}
-
-Inequality operator. This operator tests whether the internal data pointers are
-unequal (a fast test).
-
-\wxheading{Parameters}
-
-\docparam{icon}{Icon to compare with 'this'}
-
-\wxheading{Return value}
-
-Returns TRUE if the icons were unequal, FALSE otherwise.
-
projects / wxWidgets.git / blobdiff