wxWidgets 图片+文字按钮

在wxWidgets中，想要通过其本身的控件来实现图片+文件的按钮，貌似不太容易做到。但是可以通过重载wxControl来自绘图片+文件按钮。下面给出的是已经封装好的按钮类：

wxBitmapButtonEx.h

#ifndef _BITMAP_BUTTON_EX_H#define	_BITMAP_BUTTON_EX_H#include "wx/wx.h"enum eBitmapButtonStatus{    BitmapButtonNormal,    BitmapButtonEnter,    BitmapButtonDown,    BitmapButtonUp,    BitmapButtonLeave,    BitmapButtonDClick,    BitmapButtonDisable};class wxBitmapButtonEx : public wxControl{    DECLARE_DYNAMIC_CLASS(wxBitmapButtonEx)    DECLARE_EVENT_TABLE()public:    wxBitmapButtonEx();    virtual ~wxBitmapButtonEx();    wxBitmapButtonEx(wxWindow* parent, wxWindowID id,            const wxPoint& pos = wxDefaultPosition,            const wxSize& size = wxDefaultSize,            long style = wxBORDER_NONE,            const wxValidator& validator = wxDefaultValidator);    bool Create(wxWindow* parent, wxWindowID id,            const wxPoint& pos = wxDefaultPosition,            const wxSize& size = wxDefaultSize,            long style = wxSUNKEN_BORDER,            const wxValidator& validator = wxDefaultValidator);    wxSize DoGetBestSize() const;    void OnPaint(wxPaintEvent& event);    virtual void OnEnter(wxMouseEvent& event);    virtual void OnLeave(wxMouseEvent& event);    virtual void OnDown(wxMouseEvent& event);    virtual void OnDClick(wxMouseEvent& event);    virtual void OnUp(wxMouseEvent& event);    virtual bool Enable(bool enable = true);    virtual bool Disable();	//设置正常图片    wxBitmapButtonEx* set_normal_bitmap(wxBitmap* bitmap);    //设置按钮按下时的切换图片    wxBitmapButtonEx* set_down_bitmap(wxBitmap* bitmap);    //设置按钮按经过时的切换图片    wxBitmapButtonEx* set_enter_bitmap(wxBitmap* bitmap);    //设置Disable图片.    wxBitmapButtonEx* set_disable_bitmap(wxBitmap* bitmap);	//设置背景图片    wxBitmapButtonEx* set_background(const wxBitmap& bitmap);	//设置背景颜色    bool set_background_colour(const wxColour& colour);	//设置按钮文字	void set_button_text(wxString str);	//设置文字字体	void set_text_font(wxFont font);PRotected:    void DrawExistBitmap(wxDC* dc,wxBitmap* image1,wxBitmap* exist_image);private:    wxBitmap background_bitmap;    bool is_used_bg;    wxBitmap* normal_bitmap;    wxBitmap* down_bitmap;    wxBitmap* enter_bitmap;    wxBitmap* disable_bitmap;    int button_status;    wxString text;    wxFont text_font;    void DrawBackground(wxDC* dc);};#endif	/* _BITMAP_BUTTON_EX_H */
wxBitmapButtonEx.cpp
#include "wxBitmapButtonEx.h"#include <wx/settings.h>BEGIN_EVENT_TABLE(wxBitmapButtonEx, wxControl)EVT_PAINT(wxBitmapButtonEx::OnPaint)EVT_ENTER_WINDOW(wxBitmapButtonEx::OnEnter)EVT_LEAVE_WINDOW(wxBitmapButtonEx::OnLeave)EVT_LEFT_DOWN(wxBitmapButtonEx::OnDown)EVT_LEFT_DCLICK(wxBitmapButtonEx::OnDClick)EVT_LEFT_UP(wxBitmapButtonEx::OnUp)END_EVENT_TABLE()IMPLEMENT_DYNAMIC_CLASS(wxBitmapButtonEx, wxControl)wxBitmapButtonEx::wxBitmapButtonEx(){}wxBitmapButtonEx::wxBitmapButtonEx(wxWindow* parent, wxWindowID id,        const wxPoint& pos,        const wxSize& size,        long style,        const wxValidator& validator): normal_bitmap(NULL), down_bitmap(NULL), enter_bitmap(NULL){    Create(parent, id, pos, size, style, validator);}wxBitmapButtonEx::~wxBitmapButtonEx(){    wxDELETE(normal_bitmap);    wxDELETE(enter_bitmap);    wxDELETE(down_bitmap);}bool wxBitmapButtonEx::Create(wxWindow* parent, wxWindowID id,        const wxPoint& pos,        const wxSize& size,        long style,        const wxValidator& validator){    normal_bitmap = NULL;    down_bitmap = NULL;    enter_bitmap = NULL;    disable_bitmap = NULL;	button_status = BitmapButtonNormal;    if (!wxControl::Create(parent, id, pos, size, style, validator))    {        return false;    }    SetBackgroundStyle(wxBG_STYLE_SYSTEM);    is_used_bg = false;	text_font.Create(12,wxSWISS,wxFONTSTYLE_NORMAL,wxNORMAL,false,_T("System"),wxFONTENCODING_DEFAULT);    return true;}wxSize wxBitmapButtonEx::DoGetBestSize() const{    return GetSize();}void wxBitmapButtonEx::DrawExistBitmap(wxDC* dc, wxBitmap* image1,        wxBitmap* exist_image){	int width = DoGetBestSize().GetWidth();	int height = DoGetBestSize().GetHeight();	//wxClientDC dc(this);	dc->SetPen(*wxBLACK_PEN);	wxColour clr(2,18,245);	dc->SetTextForeground(*wxWHITE);	//dc->SetBrush(*wxTRANSPARENT_BRUSH);	//dc->SetBrush(*wxBLUE_BRUSH);	//wxSystemSettings::GetColour(wxSYS_COLOUR_ACTIVECAPTION)	wxBrush brush(clr);//		dc->SetBrush(brush);	dc->DrawRectangle(0, 0, width, height);	/*wxRect rc = wxRect(0, 0, width, height);	dc->DrawRoundedRectangle(rc,5);*/	int x = normal_bitmap->GetWidth();	int y = (height-normal_bitmap->GetHeight())/2.0;    if (image1)    {		dc->DrawBitmap(*image1, width-x-5, y, true);        //dc->DrawBitmap(*image1, 0, 0, true);    } else    {		dc->DrawBitmap(*exist_image, width-x-5, y, true);        //dc->DrawBitmap(*exist_image, 0, 0, true);    }	if (text.IsEmpty())	{		return;	}	if (!text_font.IsNull())	{		dc->SetFont(text_font);	}	int pointsize = text_font.GetPointSize();	//dc.SetLayoutDirection(wxLayout_Default);	int bit = text.Find('/n');	if (bit!=-1)	{		wxString str;		str = text.Left(bit);		dc->DrawText(str,5,height/2-pointsize-2);		int length = text.Length();		str = text.Mid(bit+1,length-bit-1);		dc->DrawText(str,5,height/2);	}	else	{		dc->DrawText(text,5,height/2-7);	}}void wxBitmapButtonEx::OnPaint(wxPaintEvent& event){    wxPaintDC dc(this);    DrawBackground(&dc);    //1.状态控制绘画,好处就是可以调用Refresh连背景一起刷新.    switch (button_status)    {        case BitmapButtonNormal:		case BitmapButtonUp:		case BitmapButtonLeave:			{				int width = DoGetBestSize().GetWidth();				int height = DoGetBestSize().GetHeight();				wxClientDC dc(this);				dc.SetPen(*wxGREY_PEN);				dc.SetBrush(*wxTRANSPARENT_BRUSH);				dc.DrawRectangle(0, 0, width, height);				/*wxRect rc = wxRect(0, 0, width, height);				dc.DrawRoundedRectangle(rc,5);*/				wxPoint pt[3];				pt[0].x = 1;				pt[0].y = height-1;				pt[1].x = pt[1].y = 1;				pt[2].x = width-1;				pt[2].y = 1;				dc.SetPen(*wxWHITE_PEN);				dc.DrawLines(3,pt);								pt[1].x = width-1;				pt[1].y = height-1;				dc.SetPen(*wxBLACK_PEN);				dc.DrawLines(3,pt);				int x = normal_bitmap->GetWidth();				int y = (height-normal_bitmap->GetHeight())/2.0;				dc.DrawBitmap(*normal_bitmap, width-x-5, y, true);				if (!text_font.IsNull())				{					dc.SetFont(text_font);									}				int pointsize = text_font.GetPointSize();				//dc.SetLayoutDirection(wxLayout_Default);								int bit = text.Find('/n');				if (bit!=-1)				{					wxString str;					str = text.Left(bit);					dc.DrawText(str,5,height/2-pointsize-2);					int length = text.Length();					str = text.Mid(bit+1,length-bit-1);					dc.DrawText(str,5,height/2);				}				else				{					dc.DrawText(text,5,height/2-7);				}			}			//dc.DrawBitmap(*normal_bitmap, 0, 0, true);            break;        case BitmapButtonEnter:    //        if (!enter_bitmap_)    //        {    //            int width = DoGetBestSize().GetWidth();    //            int height = DoGetBestSize().GetHeight();    //            wxClientDC dc(this);    //            dc.SetPen(*wxRED_PEN);    //            dc.SetBrush(*wxTRANSPARENT_BRUSH);    //            //dc.DrawRectangle(0, 0, width, height);				//wxRect rc = wxRect(0, 0, width, height);				//dc.DrawRoundedRectangle(rc,5);				//    //            break;    //        }    //        dc.DrawBitmap(*enter_bitmap_, 0, 0, true);            break;        case BitmapButtonDown:            DrawExistBitmap(&dc,down_bitmap,normal_bitmap);            break;        case BitmapButtonDClick:            //DrawExistBitmap(&dc,down_bitmap,normal_bitmap);            break;        case BitmapButtonDisable:            //DrawExistBitmap(&dc,disable_bitmap,normal_bitmap);            break;        default:			{				int width = DoGetBestSize().GetWidth();				int height = DoGetBestSize().GetHeight();				wxClientDC dc(this);				dc.SetPen(*wxGREY_PEN);				dc.SetBrush(*wxTRANSPARENT_BRUSH);				dc.DrawRectangle(0, 0, width, height);				/*wxRect rc = wxRect(0, 0, width, height);				dc.DrawRoundedRectangle(rc,5);*/				wxPoint pt[3];				pt[0].x = 1;				pt[0].y = height-1;				pt[1].x = pt[1].y = 1;				pt[2].x = width-1;				pt[2].y = 1;				dc.SetPen(*wxWHITE_PEN);				dc.DrawLines(3,pt);								pt[1].x = width-1;				pt[1].y = height-1;				dc.SetPen(*wxBLACK_PEN);				dc.DrawLines(3,pt);				int x = normal_bitmap->GetWidth();				int y = (height-normal_bitmap->GetHeight())/2.0;				dc.DrawBitmap(*normal_bitmap, width-x-5, y, true);				if (text.IsEmpty())				{					break;				}				if (!text_font.IsNull())				{					dc.SetFont(text_font);				}				int pointsize = text_font.GetPointSize();				//dc.SetLayoutDirection(wxLayout_Default);								int bit = text.Find('/n');				if (bit!=-1)				{					wxString str;					str = text.Left(bit);					dc.DrawText(str,5,height/2-pointsize-2);					int length = text.Length();					str = text.Mid(bit+1,length-bit-1);					dc.DrawText(str,5,height/2);				}				else				{					dc.DrawText(text,5,height/2-7);				}			}             break;    }}void wxBitmapButtonEx::DrawBackground(wxDC* dc){    if (is_used_bg)    {        dc->DrawBitmap(background_bitmap, 0, 0, true);    } else    {        wxBrush brush(GetBackgroundColour());        wxPen pen(GetBackgroundColour());        dc->SetBrush(brush);        dc->SetPen(pen);        dc->DrawRectangle(0, 0, GetSize().x, GetSize().y);    }}void wxBitmapButtonEx::OnEnter(wxMouseEvent& event){   /* button_status = BitmapButtonEnter;    Refresh();    Update();*/}void wxBitmapButtonEx::OnLeave(wxMouseEvent& event){    if (!IsEnabled())    {        return;    }    button_status = BitmapButtonLeave;    Refresh();    Update();}void wxBitmapButtonEx::OnDClick(wxMouseEvent& event){   /* button_status = BitmapButtonDown;    Refresh(false);    Update();*/}void wxBitmapButtonEx::OnDown(wxMouseEvent& event){    button_status = BitmapButtonDown;    Refresh();    Update();}void wxBitmapButtonEx::OnUp(wxMouseEvent& event){    if (BitmapButtonDown != button_status)    {        return;    }    button_status = BitmapButtonUp;    Refresh();    Update();    wxCommandEvent myEvent(wxEVT_COMMAND_BUTTON_CLICKED, GetId());    myEvent.SetEventObject(this);    GetEventHandler()->ProcessEvent(myEvent);}wxBitmapButtonEx* wxBitmapButtonEx::set_normal_bitmap(wxBitmap* bitmap){    normal_bitmap = bitmap;    return this;}wxBitmapButtonEx* wxBitmapButtonEx::set_down_bitmap(wxBitmap* bitmap){    down_bitmap = bitmap;    return this;}wxBitmapButtonEx* wxBitmapButtonEx::set_enter_bitmap(wxBitmap* bitmap){    enter_bitmap = bitmap;    return this;}bool wxBitmapButtonEx::Enable(bool enable){    if (enable)    {        button_status = BitmapButtonNormal;    } else    {        button_status = BitmapButtonDisable;    }    Refresh(false);    Update();    return wxControl::Enable(enable);}bool wxBitmapButtonEx::Disable(){    return Enable(false);}wxBitmapButtonEx* wxBitmapButtonEx::set_disable_bitmap(wxBitmap* bitmap){    disable_bitmap = bitmap;    return this;}wxBitmapButtonEx* wxBitmapButtonEx::set_background(const wxBitmap& bitmap){    is_used_bg = true;    background_bitmap = bitmap;    return this;}bool wxBitmapButtonEx::set_background_colour(const wxColour& colour){    is_used_bg = false;	return wxControl::SetBackgroundColour(colour);}//void wxBitmapButtonEx::set_button_text(wxString str){	text = str;}//void wxBitmapButtonEx::set_text_font(wxFont font){	text_font = font;}