# wxDataViewReadOnlyTextRenderer for wxDataViewListCtrl by R-CO

## wxDataViewReadOnlyTextRenderer.h

#include <wx/dataview.h>

class wxDataViewReadOnlyTextRenderer : public wxDataViewTextRenderer
{
public:
	wxDataViewReadOnlyTextRenderer(const wxString& varianttype = GetDefaultType(),
		wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
		int align = wxDVR_DEFAULT_ALIGNMENT);
	virtual ~wxDataViewReadOnlyTextRenderer() = default;

	virtual wxWindow* CreateEditorCtrl(wxWindow* parent, wxRect labelRect,
		const wxVariant& value) override;
};

## wxDataViewReadOnlyTextRenderer.cpp

#include "wxDataViewReadOnlyTextRenderer.h"

wxDataViewReadOnlyTextRenderer::wxDataViewReadOnlyTextRenderer(const wxString& varianttype, wxDataViewCellMode mode, int align)
    : wxDataViewTextRenderer(varianttype, mode, align)
{
}

wxWindow* wxDataViewReadOnlyTextRenderer::CreateEditorCtrl(wxWindow* parent, wxRect labelRect, const wxVariant& value)
{
    return new wxTextCtrl(parent, wxID_ANY, value.GetString(), wxPoint(labelRect.x, labelRect.y), wxSize(labelRect.width, labelRect.height), wxTE_READONLY);
}

## Example

unsigned int modelColumnIndex = 0;
m_dataViewListCtrl->AppendColumn(new wxDataViewColumn(_("Column_0"), new wxDataViewReadOnlyTextRenderer(), modelColumnIndex++));
m_dataViewListCtrl->AppendColumn(new wxDataViewColumn(_("Column_1"), new wxDataViewReadOnlyTextRenderer(), modelColumnIndex++));
m_dataViewListCtrl->AppendColumn(new wxDataViewColumn(_("Column_2"), new wxDataViewReadOnlyTextRenderer(wxDataViewReadOnlyTextRenderer::GetDefaultType(), wxDATAVIEW_CELL_EDITABLE, wxALIGN_LEFT), modelColumnIndex++));

---
## Remarks
此方法不是正確的wxWidgets實作
但是"碰巧"在Windows平台上可達到效果
正確的做法應該是繼承wxDataViewCustomRenderer
需要覆寫的function較多
待他日研究

###### tags: `wxWidgets`