git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50085 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
		
			
				
	
	
		
			550 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			TeX
		
	
	
	
	
	
			
		
		
	
	
			550 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			TeX
		
	
	
	
	
	
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\section{\class{wxDataViewRenderer}}\label{wxdataviewrenderer}
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This class is used by \helpref{wxDataViewCtrl}{wxdataviewctrl} to
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render the individual cells. One instance of a renderer class is
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owned by \helpref{wxDataViewColumn}{wxdataviewcolumn}. There is
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a number of ready-to-use renderers provided:
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\helpref{wxDataViewTextRenderer}{wxdataviewtextrenderer},
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\helpref{wxDataViewTextRendererAttr}{wxdataviewtextrendererattr},
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\helpref{wxDataViewIconTextRenderer}{wxdataviewicontextrenderer},
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\helpref{wxDataViewToggleRenderer}{wxdataviewtogglerenderer},
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\helpref{wxDataViewProgressRenderer}{wxdataviewprogressrenderer},
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\helpref{wxDataViewBitmapRenderer}{wxdataviewbitmaprenderer},
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\helpref{wxDataViewDateRenderer}{wxdataviewdaterenderer}.
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\helpref{wxDataViewSpinRenderer}{wxdataviewspinrenderer}.
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Additionally, the user can write own renderers by deriving from
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\helpref{wxDataViewCustomRenderer}{wxdataviewcustomrenderer}.
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The {\it wxDataViewCellMode} flag controls, what actions
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the cell data allows. {\it wxDATAVIEW\_CELL\_ACTIVATABLE}
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indicates that the user can double click the cell and
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something will happen (e.g. a window for editing a date
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will pop up). {\it wxDATAVIEW\_CELL\_EDITABLE} indicates
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that the user can edit the data in-place, i.e. an control
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will show up after a slow click on the cell. This behaviour
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is best known from changing the filename in most file 
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managers etc.
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{\small
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\begin{verbatim}
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enum wxDataViewCellMode
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{
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    wxDATAVIEW_CELL_INERT,
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    wxDATAVIEW_CELL_ACTIVATABLE,
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    wxDATAVIEW_CELL_EDITABLE
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};
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\end{verbatim}
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}
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The {\it wxDataViewCellRenderState} flag controls how the
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the renderer should display its contents in a cell:
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{\small
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\begin{verbatim}
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enum wxDataViewCellRenderState
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{
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    wxDATAVIEW_CELL_SELECTED    = 1,
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    wxDATAVIEW_CELL_PRELIT      = 2,
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    wxDATAVIEW_CELL_INSENSITIVE = 4,
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    wxDATAVIEW_CELL_FOCUSED     = 8
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};
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\end{verbatim}
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}
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\wxheading{Derived from}
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewRenderer::wxDataViewRenderer}\label{wxdataviewrendererwxdataviewrenderer}
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\func{}{wxDataViewRenderer}{\param{const wxString\& }{varianttype}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}, \param{int }{alignment = wxALIGN\_LEFT|wxALIGN\_CENTRE\_VERTICAL}}
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Constructor.
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\membersection{wxDataViewRenderer::GetMode}\label{wxdataviewrenderergetmode}
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\func{virtual wxDataViewCellMode}{GetMode}{\void}
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Returns the cell mode.
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\membersection{wxDataViewRenderer::GetOwner}\label{wxdataviewrenderergetowner}
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\func{virtual wxDataViewColumn*}{GetOwner}{\void}
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Returns pointer to the owning \helpref{wxDataViewColumn}{wxdataviewcolumn}.
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\membersection{wxDataViewRenderer::GetValue}\label{wxdataviewrenderergetvalue}
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\func{virtual bool}{GetValue}{\param{wxVariant\& }{value}}
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This methods retrieves the value from the renderer in order to
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transfer the value back to the data model. Returns {\it false}
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on failure.
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\membersection{wxDataViewRenderer::GetVariantType}\label{wxdataviewrenderergetvarianttype}
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\func{virtual wxString}{GetVariantType}{\void}
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Returns a string with the type of the \helpref{wxVariant}{wxvariant}
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supported by this renderer.
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\membersection{wxDataViewRenderer::SetOwner}\label{wxdataviewrenderersetowner}
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\func{virtual void}{SetOwner}{\param{wxDataViewColumn* }{owner}}
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Sets the owning \helpref{wxDataViewColumn}{wxdataviewcolumn}. This
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is usually called from within wxDataViewColumn.
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\membersection{wxDataViewRenderer::SetValue}\label{wxdataviewrenderersetvalue}
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\func{virtual bool}{SetValue}{\param{const wxVariant\& }{value}}
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Set the value of the renderer (and thus its cell) to {\it value}.
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The internal code will then render this cell with this data.
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\membersection{wxDataViewRenderer::Validate}\label{wxdataviewrenderervalidate}
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\func{virtual bool}{Validate}{\param{wxVariant\& }{value}}
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Before data is committed to the data model, it is passed to this
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method where it can be checked for validity. This can also be
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used for checking a valid range or limiting the user input in
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a certain aspect (e.g. max number of characters or only alphanumeric
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input, ASCII only etc.). Return {\it false} if the value is
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not valid.
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Please note that due to implementation limitations, this validation
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is done after the editing control already is destroyed and the
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editing process finished.
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\section{\class{wxDataViewTextRenderer}}\label{wxdataviewtextrenderer}
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wxDataViewTextRenderer is used for rendering text. It supports
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in-place editing if desired.
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewTextRenderer::wxDataViewTextRenderer}\label{wxdataviewtextrendererwxdataviewtextrenderer}
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\func{}{wxDataViewTextRenderer}{\param{const wxString\& }{varianttype = "string"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}}
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\section{\class{wxDataViewTextRendererAttr}}\label{wxdataviewtextrendererattr}
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The same as \helpref{wxDataViewTextRenderer}{wxdataviewtextrenderer} but with
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support for font attributes. Font attributes are currently only supported
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under GTK+ and MSW.
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See also \helpref{wxDataViewModel::GetAttr}{wxdataviewmodelgetattr} and
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\helpref{wxDataViewItemAttr}{wxdataviewitemattr}.
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\wxheading{Derived from}
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\helpref{wxDataViewTextRenderer}{wxdataviewtextrenderer}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\wxheading{Data structures}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewTextRendererAttr::wxDataViewTextRendererAttr}\label{wxdataviewtextrendererattrwxdataviewtextrendererattr}
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\func{}{wxDataViewTextRendererAttr}{\param{const wxString\& }{varianttype = "string"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}, \param{int }{align = wxDVR\_DEFAULT\_ALIGNMENT}}
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\section{\class{wxDataViewProgressRenderer}}\label{wxdataviewprogressrenderer}
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wxDataViewProgressRenderer
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewProgressRenderer::wxDataViewProgressRenderer}\label{wxdataviewprogressrendererwxdataviewprogressrenderer}
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\func{}{wxDataViewProgressRenderer}{\param{const wxString\& }{label = wxEmptyString}, \param{const wxString\& }{varianttype = long"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}}
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\section{\class{wxDataViewIconText}}\label{wxdataviewicontext}
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wxDataViewIconText is used by 
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\helpref{wxDataViewIconTextRenderer}{wxdataviewicontextrenderer}
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for data transfer. This class can be converted to a from
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a \helpref{wxVariant}{wxvariant}.
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\wxheading{Derived from}
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<dataview.h>
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\membersection{wxDataViewIconText::wxDataViewIconText}\label{wxdataviewicontextwxdataviewicontext}
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\func{}{wxDataViewIconText}{\param{const wxString\& }{text = wxEmptyString}, \param{const wxIcon\& }{icon = wxNullIcon}}
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\func{}{wxDataViewIconText}{\param{const wxDataViewIconText\& }{other}}
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Constructor.
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\membersection{wxDataViewIconText::GetIcon}\label{wxdataviewicontextgeticon}
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\constfunc{const wxIcon\&}{GetIcon}{\void}
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Gets the icon.
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\membersection{wxDataViewIconText::GetText}\label{wxdataviewicontextgettext}
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\constfunc{wxString}{GetText}{\void}
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Gets the text.
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\membersection{wxDataViewIconText::SetIcon}\label{wxdataviewicontextseticon}
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\func{void}{SetIcon}{\param{const wxIcon\& }{icon}}
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Set the icon.
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\membersection{wxDataViewIconText::SetText}\label{wxdataviewicontextsettext}
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\func{void}{SetText}{\param{const wxString\& }{text}}
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Set the text.
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\section{\class{wxDataViewIconTextRenderer}}\label{wxdataviewicontextrenderer}
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The wxDataViewIconTextRenderer class is used to display text with
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a small icon next to it as it is typically done in a file manager.
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This classes uses the \helpref{wxDataViewIconText}{wxdataviewicontext}
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helper class to store its data. wxDataViewIonText can be converted
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to a from a \helpref{wxVariant}{wxvariant} using the left shift
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operator.
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewIconTextRenderer::wxDataViewIconTextRenderer}\label{wxdataviewtogglerendererwxdataviewicontextrenderer}
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\func{}{wxDataViewIconTextRenderer}{\param{const wxString\& }{varianttype = "wxDataViewIconText"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}}
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\section{\class{wxDataViewToggleRenderer}}\label{wxdataviewtogglerenderer}
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wxDataViewToggleRenderer
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewToggleRenderer::wxDataViewToggleRenderer}\label{wxdataviewtogglerendererwxdataviewtogglerenderer}
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\func{}{wxDataViewToggleRenderer}{\param{const wxString\& }{varianttype = "bool"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}}
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\section{\class{wxDataViewBitmapRenderer}}\label{wxdataviewbitmaprenderer}
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wxDataViewBitmapRenderer
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewBitmapRenderer::wxDataViewBitmapRenderer}\label{wxdataviewbitmaprendererwxdataviewbitmaprenderer}
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\func{}{wxDataViewBitmapRenderer}{\param{const wxString\& }{varianttype = "wxBitmap"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}}
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\section{\class{wxDataViewDateRenderer}}\label{wxdataviewdaterenderer}
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wxDataViewDateRenderer
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewDateRenderer::wxDataViewDateRenderer}\label{wxdataviewdaterendererwxdataviewdaterenderer}
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\func{}{wxDataViewDateRenderer}{\param{const wxString\& }{varianttype = "datetime"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_ACTIVATABLE}}
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\section{\class{wxDataViewCustomRenderer}}\label{wxdataviewcustomrenderer}
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You need to derive a new class from wxDataViewCustomRenderer in
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order to write a new renderer. You need to override at least 
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\helpref{SetValue}{wxdataviewrenderersetvalue},
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\helpref{GetValue}{wxdataviewrenderergetvalue}, 
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\helpref{GetSize}{wxdataviewcustomrenderergetsize}
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and \helpref{Render}{wxdataviewcustomrendererrender}.
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If you want your renderer to support in-place editing then you
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also need to override 
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\helpref{HasEditorCtrl}{wxdataviewcustomrendererhaseditorctrl},
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\helpref{CreateEditorCtrl}{wxdataviewcustomrenderercreateeditorctrl}
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and \helpref{GetValueFromEditorCtrl}{wxdataviewcustomrenderergetvaluefromeditorctrl}.
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Note that a special event handler will be pushed onto that
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editor control which handles <ENTER> and focus out events
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in order to end the editing.
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\wxheading{Derived from}
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\helpref{wxDataViewRenderer}{wxdataviewrenderer}\\
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/dataview.h>
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\wxheading{Library}
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\helpref{wxAdv}{librarieslist}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxDataViewCustomRenderer::wxDataViewCustomRenderer}\label{wxdataviewcustomrendererwxdataviewcustomrenderer}
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\func{}{wxDataViewCustomRenderer}{\param{const wxString\& }{varianttype = "string"}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_INERT}, \param{bool }{no\_init = false}}
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Constructor.
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\membersection{wxDataViewCustomRenderer::\destruct{wxDataViewCustomRenderer}}\label{wxdataviewcustomrendererdtor}
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\func{}{\destruct{wxDataViewCustomRenderer}}{\void}
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Destructor.
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\membersection{wxDataViewCustomRenderer::HasEditorCtrl}\label{wxdataviewcustomrendererhaseditorctrl}
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\func{virtual bool}{HasEditorCtrl}{\void}
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Override this and make it return {\it true} in order to
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indicate that this renderer supports in-place editing.
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\membersection{wxDataViewCustomRenderer::CreateEditorCtrl}\label{wxdataviewcustomrenderercreateeditorctrl}
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\func{virtual wxControl*}{CreateEditorCtrl}{\param{wxWindow *}{parent}, \param{wxRect }{labelRect}, \param{const wxVariant \& }{value}}
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Override this to create the actual editor control once editing
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is about to start. {\it parent} is the parent of the editor
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control, {\it labelRect} indicates the position and
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size of the editor control and {\it value} is its initial value:
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{\small
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\begin{verbatim}
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{ 
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    long l = value;
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    return new wxSpinCtrl( parent, wxID_ANY, wxEmptyString, 
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                 labelRect.GetTopLeft(), labelRect.GetSize(), 0, 0, 100, l );
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}
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\end{verbatim}
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}
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\membersection{wxDataViewCustomRenderer::GetValueFromEditorCtrl}\label{wxdataviewcustomrenderergetvaluefromeditorctrl}
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\func{virtual bool}{GetValueFromEditorCtrl}{\param{wxControl* }{editor}, \param{wxVariant \& }{value}}
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Overrride this so that the renderer can get the value 
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from the editor control (pointed to by {\it editor}):
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						|
 | 
						|
{\small
 | 
						|
\begin{verbatim}
 | 
						|
{ 
 | 
						|
    wxSpinCtrl *sc = (wxSpinCtrl*) editor;
 | 
						|
    long l = sc->GetValue();
 | 
						|
    value = l;
 | 
						|
    return true;
 | 
						|
}
 | 
						|
\end{verbatim}
 | 
						|
}
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::Activate}\label{wxdataviewcustomrendereractivate}
 | 
						|
 | 
						|
\func{virtual bool}{Activate}{\param{wxRect }{cell}, \param{wxDataViewModel* }{model}, \param{unsigned int }{col}, \param{unsigned int }{row}}
 | 
						|
 | 
						|
Override this to react to double clicks or <ENTER>.
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::GetDC}\label{wxdataviewcustomrenderergetdc}
 | 
						|
 | 
						|
\func{virtual wxDC*}{GetDC}{\void}
 | 
						|
 | 
						|
Create DC on request. Internal.
 | 
						|
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::GetSize}\label{wxdataviewcustomrenderergetsize}
 | 
						|
 | 
						|
\func{virtual wxSize}{GetSize}{\void}
 | 
						|
 | 
						|
Return size required to show content.
 | 
						|
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::LeftClick}\label{wxdataviewcustomrendererleftclick}
 | 
						|
 | 
						|
\func{virtual bool}{LeftClick}{\param{wxPoint }{cursor}, \param{wxRect }{cell}, \param{wxDataViewModel* }{model}, \param{unsigned int }{col}, \param{unsigned int }{row}}
 | 
						|
 | 
						|
Overrride this to react to a left click.
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::Render}\label{wxdataviewcustomrendererrender}
 | 
						|
 | 
						|
\func{virtual bool}{Render}{\param{wxRect }{cell}, \param{wxDC* }{dc}, \param{int }{state}}
 | 
						|
 | 
						|
Override this to render the cell. Before this is called,
 | 
						|
\helpref{SetValue}{wxdataviewrenderersetvalue} was called
 | 
						|
so that this instance knows what to render.
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::RenderText}\label{wxdataviewcustomrendererrender}
 | 
						|
 | 
						|
\func{bool}{RenderText}{\param{const wxString\& }{text}, \param{int }{xoffset}, \param{wxRect }{cell}, \param{wxDC* }{dc}, \param{int }{state}}
 | 
						|
 | 
						|
This method should be called from within \helpref{Render}{wxdataviewcustomrendererrender}
 | 
						|
whenever you need to render simple text. This will ensure that the
 | 
						|
correct colour, font and vertical alignment will be chosen so the
 | 
						|
text will look the same as text drawn by native renderers.
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::RightClick}\label{wxdataviewcustomrendererrightclick}
 | 
						|
 | 
						|
\func{virtual bool}{RightClick}{\param{wxPoint }{cursor}, \param{wxRect }{cell}, \param{wxDataViewModel* }{model}, \param{unsigned int }{col}, \param{unsigned int }{row}}
 | 
						|
 | 
						|
Overrride this to react to a right click.
 | 
						|
 | 
						|
\membersection{wxDataViewCustomRenderer::StartDrag}\label{wxdataviewcustomrendererstartdrag}
 | 
						|
 | 
						|
\func{virtual bool}{StartDrag}{\param{wxPoint }{cursor}, \param{wxRect }{cell}, \param{wxDataViewModel* }{model}, \param{unsigned int }{col}, \param{unsigned int }{row}}
 | 
						|
 | 
						|
Overrride this to start a drag operation.
 | 
						|
 | 
						|
 | 
						|
\section{\class{wxDataViewSpinRenderer}}\label{wxdataviewspinrenderer}
 | 
						|
 | 
						|
This is a specialized renderer for rendering integer values. It
 | 
						|
supports modifying the values in-place by using a wxSpinCtrl.
 | 
						|
The renderer only support variants of type {\it long}.
 | 
						|
 | 
						|
\wxheading{Derived from}
 | 
						|
 | 
						|
\helpref{wxDataViewCustomRenderer}{wxdataviewcustomrenderer}
 | 
						|
 | 
						|
\wxheading{Include files}
 | 
						|
 | 
						|
<dataview.h>
 | 
						|
 | 
						|
\wxheading{Data structures}
 | 
						|
 | 
						|
\latexignore{\rtfignore{\wxheading{Members}}}
 | 
						|
 | 
						|
 | 
						|
\membersection{wxDataViewSpinRenderer::wxDataViewSpinRenderer}\label{wxdataviewspinrendererwxdataviewspinrenderer}
 | 
						|
 | 
						|
\func{}{wxDataViewSpinRenderer}{\param{int }{min}, \param{int }{max}, \param{wxDataViewCellMode }{mode = wxDATAVIEW\_CELL\_EDITABLE}, \param{int }{alignment = wxDVR\_DEFAULT\_ALIGNMENT}}
 | 
						|
 | 
						|
Constructor. {\it min} and {\it max} indicate the minimum und
 | 
						|
maximum values of for the wxSpinCtrl.
 | 
						|
 |