Detailed Description

template<class C>
class wxSystemThemedControl< C >

A helper class making it possible to use system theme for any control.

Under MSW, there is an alternative theme available for the list and list-like controls. This theme is used by Windows Explorer list and tree view and so is arguably more familiar to the users than the standard appearance of these controls.

This class is used in wxWidgets to enable this system theme in wxTreeCtrl, wxListCtrl and wxDataViewCtrl and thus give them the same, familiar look. It can also be used as a helper for implementing custom controls with the same appearance. Notice that when using this class it is especially important to use wxRendererNative::DrawItemSelectionRect() and wxRendererNative::DrawItemText() to draw the control items to ensure that they appear correctly under all platforms and Windows versions.

The following example shows implementation of a system theme enabled wxVListBox:

#include <wx/systhemectrl.h>
 
class MyListCtrl : public wxSystemThemedControl<wxVListBox>
{
public:
    MyListCtrl(wxWindow* parent)
    {
 
        ...
 
        EnableSystemTheme();
    }
 
    void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const override
    {
        wxRendererNative::GetDefault().DrawItemText(this, dc, "Item #x", rect);
    }
};

Please also note that if you want to disable the system theme use in the control that use it by default, it's best to do it before actually creating the control as enabling the system theme can't always be completely undone later. I.e. instead of

// THIS CODE IS WRONG, DO NOT DO IT LIKE THIS
wxTreeCtrl* tree = new wxTreeCtrl(parent, wxID_ANY);
tree->EnableSystemTheme(false);

prefer the following version:

// Use default ctor to create the object, avoiding creating the window.
wxTreeCtrl* tree = new wxTreeCtrl();
 
// Then disable the system theme used by default.
tree->EnableSystemTheme(false);
 
// And only then actually create the window.
tree->Create(parent, wxID_ANY);

On non-MSW platforms this class currently does nothing but is still available, so that it can be used in portable code without any conditional compilation directives.

Category: Miscellaneous Windows

See also: wxTreeCtrl, wxListCtrl, wxDataViewCtrl, wxRendererNative

Since: 3.1.0

Public Member Functions
	wxSystemThemedControl ()
	Trivial default constructor. More...

void	EnableSystemTheme (bool enable=true)
	This method may be called to disable the system theme of controls using it by default. More...

Constructor & Destructor Documentation

◆ wxSystemThemedControl()

template<class C >

wxSystemThemedControl< C >::wxSystemThemedControl ( )

Trivial default constructor.

Member Function Documentation

◆ EnableSystemTheme()

template<class C >

void wxSystemThemedControl< C >::EnableSystemTheme ( bool enable = true )

This method may be called to disable the system theme of controls using it by default.