CButton使用详解

//========================================================================
//TITLE:
// CButton使用详解
//AUTHOR:
// norains
//DATE:
// Saturday 16-May-2007
//Environment:
// EVC4.0 + Standard SDK 4.2
// EVC4.0 + Standard SDK 5.0
//========================================================================

恩,不用怀疑了,这个CButton类也不是微软的通用控件,而是和我之前写的CText及CProgress一样,都是为了方便大面积需要贴图的程序,而模仿微软的特性来写的一个类.

闲话少说,但确实也没什么可说的,就让我们直接看看例程代码.

CButtonm_Btn;

//设置该按钮可用
m_Btn.SetEnable(TRUE);

//设置实例句柄
m_Btn.SetHinstance(hInst);

//设置按钮的位置
m_Btn.SetPosition(&RC_BTN);

//设置普通状态,按下状态,无效状态的图片信息
m_Btn.SetImgInfoDisable(&IMG_DISABLE);
m_Btn.SetImgInfoEnable(&IMG_ENABLE);
m_Btn.SetImgInfoPush(&IMG_PUSH);

//设置透明绘制
m_Btn.SetTransparent(TRUE);

//设置透明色
m_Btn.SetTransparentColor(TRANSPARENT_COLOR);

//绘制背景
m_Btn.Draw(hdc);

//判断是否点击该按钮
if(m_Btn.CheckTap(&pt)==TRUE)
...{
//Dosomething..
}

恩,就这么简单,也没什么很特别的地方,仅仅主要是方便大量采用贴图的程序而已.

CButton类完整源码:

/**///////////////////////////////////////////////////////////////////////
//Button.h:interfacefortheCButtonclass.
//
//Version:
//1.1.1
//Data:
//2007.03.31
/**///////////////////////////////////////////////////////////////////////

#ifndefBUTTON_H
#defineBUTTON_H



#include"CtrlCommon.h"



//---------------------------------------------------------------------------
//Enumdata

//Forthebuttondraw
enumButtonDrawType
...{
BTN_DRAW_AUTO,
BTN_DRAW_PUSH,
BTN_DRAW_ENABLE,
BTN_DRAW_DISABLE
};

//------------------------------------------------------------------------------
//Class

classCButton
...{
public:
voidSetTransparent(BOOLbTran);
voidSetTransparentColor(COLORREFcrColor);
voidGetPosition(RECT*prcOut);
BOOLCheckTap(constLPPOINTppt);
voidSetPosition(constRECT*pRc);
voidSetImgInfoPush(constDISPIMAGEINFO*pImgInfo);
voidSetImgInfoDisable(constDISPIMAGEINFO*pImgInfo);
voidSetImgInfoEnable(constDISPIMAGEINFO*pImgInfo);
voidSetHinstance(HINSTANCEhInst);
BOOLDraw(HDChdc,ButtonDrawTypebtnDraw=BTN_DRAW_AUTO);
voidSetEnable(BOOLbEnable);
BOOLGetEnable();
CButton();
virtual~CButton();

protected:
BOOLm_bEnable;
RECTm_rcWndPos;
DISPIMAGEINFOm_ImgPush;
DISPIMAGEINFOm_ImgEnable;
DISPIMAGEINFOm_ImgDisable;
HANDLEm_hBmpPush;
HANDLEm_hBmpEnable;
HANDLEm_hBmpDisable;
HINSTANCEm_hInst;
COLORREFm_crTranColor;
BOOLm_bTran;
};

#endif//#ifndefBUTTON_H

/**///////////////////////////////////////////////////////////////
//Button.cpp:implementationoftheCButtonclass.
//
/**///////////////////////////////////////////////////////////////////////

#include"stdafx.h"
#include"Button.h"


//-------------------------------------------------------------------
//Macrodefine
#defineDEFAULT_TRANSPARENT_COLORRGB(125,125,125)
//--------------------------------------------------------------------

/**///////////////////////////////////////////////////////////////////////
//Construction/Destruction
/**///////////////////////////////////////////////////////////////////////

CButton::CButton()
...{
m_bEnable=TRUE;
memset(&m_rcWndPos,0,sizeof(m_rcWndPos));
memset(&m_ImgPush,0,sizeof(m_ImgPush));
memset(&m_ImgEnable,0,sizeof(m_ImgEnable));
memset(&m_ImgDisable,0,sizeof(m_ImgDisable));
m_hBmpPush=NULL;
m_hBmpEnable=NULL;
m_hBmpDisable=NULL;
m_hInst=NULL;

m_crTranColor=DEFAULT_TRANSPARENT_COLOR;
m_bTran=FALSE;
}

CButton::~CButton()
...{
if(m_hBmpPush!=NULL)
...{
DeleteObject(m_hBmpPush);
m_hBmpPush=NULL;
}

if(m_hBmpEnable!=NULL)
...{
DeleteObject(m_hBmpEnable);
m_hBmpEnable=NULL;
}

if(m_hBmpDisable!=NULL)
...{
DeleteObject(m_hBmpDisable);
m_hBmpDisable=NULL;
}
}


//--------------------------------------------------------------------
//Description:
//Thebuttonisenableornot
//
//-------------------------------------------------------------------
BOOLCButton::GetEnable()
...{
returnm_bEnable;
}



//--------------------------------------------------------------------
//Description:
//Setthebuttonstatus
//
//-------------------------------------------------------------------
voidCButton::SetEnable(BOOLbEnable)
...{
m_bEnable=bEnable;
}


//--------------------------------------------------------------------
//Description:
//Drawthebutton
//
//-------------------------------------------------------------------
BOOLCButton::Draw(HDChdc,ButtonDrawTypebtnDraw)
...{
if(m_hInst==NULL)
...{
returnFALSE;
}

HANDLEhBmp=NULL;
PDISPIMAGEINFOpInfo;

if(btnDraw==BTN_DRAW_AUTO)
...{
if(m_bEnable==TRUE)
...{
if(m_hBmpEnable==NULL)
...{
m_hBmpEnable=LoadImage(m_hInst,MAKEINTRESOURCE(m_ImgEnable.imgID),IMAGE_BITMAP,0,0,0);
}

hBmp=m_hBmpEnable;
pInfo=&m_ImgEnable;
}
else
...{
if(m_hBmpDisable==NULL)
...{
m_hBmpDisable=LoadImage(m_hInst,MAKEINTRESOURCE(m_ImgDisable.imgID),IMAGE_BITMAP,0,0,0);
}

hBmp=m_hBmpDisable;
pInfo=&m_ImgDisable;
}
}
elseif(btnDraw==BTN_DRAW_ENABLE)
...{
if(m_hBmpEnable==NULL)
...{
m_hBmpEnable=LoadImage(m_hInst,MAKEINTRESOURCE(m_ImgEnable.imgID),IMAGE_BITMAP,0,0,0);
}

hBmp=m_hBmpEnable;
pInfo=&m_ImgEnable;
}
elseif(btnDraw==BTN_DRAW_DISABLE)
...{
if(m_hBmpDisable==NULL)
...{
m_hBmpDisable=LoadImage(m_hInst,MAKEINTRESOURCE(m_ImgDisable.imgID),IMAGE_BITMAP,0,0,0);
}

hBmp=m_hBmpDisable;
pInfo=&m_ImgDisable;
}
elseif(btnDraw==BTN_DRAW_PUSH)
...{
if(m_hBmpPush==NULL)
...{
m_hBmpPush=LoadImage(m_hInst,MAKEINTRESOURCE(m_ImgPush.imgID),IMAGE_BITMAP,0,0,0);
}

hBmp=m_hBmpPush;
pInfo=&m_ImgPush;
}


//CreateaDCthatmatchesthedevice
HDChdcMem=CreateCompatibleDC(hdc);
//Selectthebitmapintotothecompatibledevicecontext
HGDIOBJhOldSel=SelectObject(hdcMem,hBmp);
//CopythebitmapimagefromthememoryDCtothescreenDC
if(m_bTran==FALSE)
...{
StretchBlt(hdc,m_rcWndPos.left,m_rcWndPos.top,(m_rcWndPos.right-m_rcWndPos.left),(m_rcWndPos.bottom-m_rcWndPos.top),
hdcMem,pInfo->left,pInfo->top,(pInfo->right-pInfo->left),(pInfo->bottom-pInfo->top),SRCCOPY);
}
else
...{
TransparentBlt(hdc,m_rcWndPos.left,m_rcWndPos.top,(m_rcWndPos.right-m_rcWndPos.left),(m_rcWndPos.bottom-m_rcWndPos.top),
hdcMem,pInfo->left,pInfo->top,(pInfo->right-pInfo->left),(pInfo->bottom-pInfo->top),m_crTranColor);
}
//RestoreoriginalbitmapselectionanddestroythememoryDC
SelectObject(hdcMem,hOldSel);
DeleteDC(hdcMem);



returnTRUE;
}


//--------------------------------------------------------------------
//Description:
//Setthehandleofinstance
//
//-------------------------------------------------------------------
voidCButton::SetHinstance(HINSTANCEhInst)
...{
m_hInst=hInst;
}


//--------------------------------------------------------------------
//Description:
//Settheimageofenable
//
//-------------------------------------------------------------------
voidCButton::SetImgInfoEnable(constDISPIMAGEINFO*pImgInfo)
...{
if(m_hBmpEnable!=NULL)
...{
DeleteObject(m_hBmpEnable);
m_hBmpEnable=NULL;
}

m_ImgEnable=*pImgInfo;
}
//--------------------------------------------------------------------
//Description:
//Settheimageofdisable
//
//-------------------------------------------------------------------
voidCButton::SetImgInfoDisable(constDISPIMAGEINFO*pImgInfo)
...{
if(m_hBmpDisable!=NULL)
...{
DeleteObject(m_hBmpDisable);
m_hBmpDisable=NULL;
}

m_ImgDisable=*pImgInfo;
}
//--------------------------------------------------------------------
//Description:
//Settheimageofpush
//
//-------------------------------------------------------------------
voidCButton::SetImgInfoPush(constDISPIMAGEINFO*pImgInfo)
...{
if(m_hBmpPush!=NULL)
...{
DeleteObject(m_hBmpPush);
m_hBmpPush=NULL;
}

m_ImgPush=*pImgInfo;
}

//--------------------------------------------------------------------
//Description:
//Setthebuttonposition
//
//-------------------------------------------------------------------
voidCButton::SetPosition(constRECT*pRc)
...{
m_rcWndPos=*pRc;
}


//--------------------------------------------------------------------
//Description:
//Checktappedpositioninthearea.Ifthebuttonisdisable,
//itwouldreturnFALSE.
//
//-------------------------------------------------------------------
BOOLCButton::CheckTap(constLPPOINTppt)
...{
if(m_bEnable==FALSE)
...{
returnFALSE;
}

if(ppt->x>=m_rcWndPos.left&&ppt->x<=m_rcWndPos.right&&ppt->y>=m_rcWndPos.top&&ppt->y<=m_rcWndPos.bottom)
...{
returnTRUE;
}
else
...{
returnFALSE;
}

}

//--------------------------------------------------------------------
//Description:
//Getthepositionasrect
//
//---------------------------------------------------------------------
voidCButton::GetPosition(RECT*prcOut)
...{
*prcOut=m_rcWndPos;
}


//--------------------------------------------------------------------
//Description:
//Setthetransparentcolor
//
//-------------------------------------------------------------------
voidCButton::SetTransparentColor(COLORREFcrColor)
...{
m_crTranColor=crColor;
}
//--------------------------------------------------------------------
//Description:
//Setthetransparentmode
//
//Parameters:
//bTran:[in]
//TRUE-Don'tdrawthetransparentcolor
//FALSE-Drawallthecolor
//
//-------------------------------------------------------------------
voidCButton::SetTransparent(BOOLbTran)
...{
m_bTran=bTran;
}