wxWidgets第八課 wxControl自定義控件

說明

    從wxControl中派生出一個控件，調(diào)用OnPaint函數(shù)對控件進(jìn)行渲染

例子

頭文件

#include "wx/bitmap.h"

#include "wx/control.h"

#include "wx/dcclient.h"

聲明

class CFlightInstrumentCompass : public wxControl

{

private:

DECLARE_DYNAMIC_CLASS(CFlightInstrumentCompass)

DECLARE_EVENT_TABLE()

public:

CFlightInstrumentCompass() {Init();}

void Init() {}

CFlightInstrumentCompass(wxWindow *parent,

wxWindowID id,

const wxPoint& pos = wxDefaultPosition,

const wxSize& size = wxDefaultSize,

long style = 0,

const wxValidator& validator = wxDefaultValidator)

{

Init();

Create(parent, id, pos, size, style, validator);

}

bool Create(wxWindow *parent,

wxWindowID id,

const wxPoint& pos = wxDefaultPosition,

const wxSize& size = wxDefaultSize,

long style = 0,

const wxValidator& validator = wxDefaultValidator);

~CFlightInstrumentCompass(void);

protected:

void OnPaint(wxPaintEvent& event);

};

定義

BEGIN_EVENT_TABLE(CFlightInstrumentCompass, wxControl)

EVT_PAINT(CFlightInstrumentCompass::OnPaint)

END_EVENT_TABLE()

IMPLEMENT_DYNAMIC_CLASS(CFlightInstrumentCompass, wxControl)

void CFlightInstrumentCompass::OnPaint( wxPaintEvent& event )

{

}

提醒

    為了減少閃爍，重寫OnEraseBackground函數(shù)，并且留空，說明不再需要擦除背景