游戏引擎

开发平台：
Visual C++

CEditBar.cpp：源码内容
							#include "stdafx.h"
#include "CEditBar.h"
#include "Common.h"
extern void InputInitial(long x,long y,char *buffer,char Mode);
extern void InputFinish(void);
extern LRESULT HandleCompPaint(void);
extern LRESULT HandleCandPaint(void);
int CEditBar::Initiate(HWND hwndParent,LPTSTR lpstrBmp,int iCaretWidth,int iCaretHeight,int iMaxEditLen,LPRECT lprcRange,LPTSTR lpstr,BOOL bStar)
{
	hwnd=hwndParent;
	sizeEdit.cx=0;sizeEdit.cy=0;
	rcEditPos.left=ptCaretPos.x=lprcRange->left;
	rcEditPos.top=ptCaretPos.y=lprcRange->top;
	rcEditPos.right=lprcRange->right;
	rcEditPos.bottom=lprcRange->bottom;
	CEditBar::iCaretWidth=iCaretWidth;
	CEditBar::iCaretHeight=iCaretHeight;
	bEnable=FALSE;
	bPassword=bStar;
	if(!(lpstrPassword=new TCHAR[iMaxEditLen+1]))
		return ERR_SYSTEM;
	for(int i=0;i<iMaxEditLen;i++)
		lpstrPassword[i]='*';
	if(!(lpstrEdit=new TCHAR[iMaxEditLen+1]))
		return ERR_SYSTEM;
	else
		iEditMaxLen=iMaxEditLen;
	if(lpstr)
	{
		if(iEditMaxLen<(iEditLen=lstrlen(lpstr)))
			iEditLen=iEditMaxLen;
		iEditPos=iEditLen;
		if(NULL==(lstrcpyn(lpstrEdit,lpstr,iEditLen+1)))
		{
			iEditLen=0;
			iEditPos=0;
		}
	}
	else
	{
		iEditLen=0;
		iEditPos=0;
	}
	cChina=0;
	SetNULL();
	if(lpstrBmp)
	{
		if(!(hBmp=(HBITMAP)LoadImage(GetModuleHandle(NULL),lpstrBmp,IMAGE_BITMAP,0,0,LR_LOADTRANSPARENT)))
			hBmp=(HBITMAP)LoadImage(NULL,lpstrBmp,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_LOADTRANSPARENT);
	}
	else
		hBmp=NULL;
	return ERR_NO;
}
void CEditBar::Release()
{
	Disable();
	if(hBmp)
	{
		DeleteObject(hBmp);
		hBmp=NULL;
	}
	if(lpstrEdit)
	{
		delete[] lpstrEdit;
		lpstrEdit=NULL;
	}
	if(lpstrPassword)
	{
		delete[] lpstrPassword;
		lpstrPassword=NULL;
	}
}
void CEditBar::Enable()
{
  InputInitial(rcEditPos.left,rcEditPos.top,lpstrEdit,0);
		bEnable=TRUE;
}
void CEditBar::Disable()
{
	if(bEnable)
	{
    InputFinish();
		bEnable=FALSE;
	}
}
void CEditBar::PutChar(WPARAM wParam,int iRepeat)
{
	if(!bEnable)
		return;
	for(int i=0;i<iRepeat;i++){
		switch(wParam){
		case 'b':
			DeleteBack();
			break;
		case 'x1B':
			iEditLen=0;
			iEditPos=0;
			SetNULL();
			break;
		case 't':
		case 'n':
		case 'r':
			break;
		default:
			SetChar((TCHAR)wParam);
			break;
		}
	}
}
void CEditBar::ControlEdit(WPARAM wParam)
{
	if(!bEnable)
		return;
	switch (wParam)
	{
	case VK_HOME:
		iEditPos=0;
		break;
	case VK_END:
		iEditPos=iEditLen;
		break;
/*	case VK_PRIOR:
		yCaret=0;
		break;
	case VK_NEXT:
		yCaret=cyBuffer-1;
		break;
*/	case VK_LEFT:
		GetLeft();
		break;
	case VK_RIGHT:
		GetRight();
		break;
/*	case VK_UP:
		yCaret=max(yCaret-1,0);
		break;
	case VK_DOWN:
		yCaret=min(yCaret+1,cyBuffer-1);
		break;
*/	case VK_DELETE:
		DeleteChar();
		break;
	}
}
inline int CEditBar::SetCaretPos()
{
	if(TRUE==::SetCaretPos(ptCaretPos.x+sizeEdit.cx,ptCaretPos.y))
		return ERR_DONE;
	return ERR_NO;
}
int CEditBar::ShowEdit(IDirectDrawSurface *pddsBack,IDirectDrawSurface *pdds,LPRECT lprcCaret,HFONT font,COLORREF colorEnable,COLORREF colorDisable,BOOL bShow)
{
	HDC hdc;
	HRESULT hr=pddsBack->GetDC(&hdc);
	if(FAILED(hr))
	{
		if(DDERR_SURFACELOST==hr)
		{
			pddsBack->Restore();
			pddsBack->GetDC(&hdc);
		}
		else
			return ERR_SYSTEM;
	}
	if(font)
		fontOld=(HFONT)SelectObject(hdc,font);
	if(!GetTextExtentPoint32(hdc,lpstrEdit,iEditPos,&sizeEdit))
	{
		sizeEdit.cx=0;
		sizeEdit.cy=0;
	}
	if(bEnable){
		SetTextColor(hdc,colorEnable);
	}else{
		SetTextColor(hdc,colorDisable);
	}
	SetBkMode(hdc,TRANSPARENT);
	if(bPassword)
		DrawText(hdc,lpstrPassword,iEditLen,&rcEditPos,DT_NOCLIP | DT_EDITCONTROL | DT_EXPANDTABS | DT_NOPREFIX);
	else
		DrawText(hdc,lpstrEdit,-1,&rcEditPos,DT_NOCLIP | DT_EDITCONTROL | DT_EXPANDTABS | DT_NOPREFIX);
	if(fontOld)
		SelectObject(hdc,fontOld);
	hr=pddsBack->ReleaseDC(hdc);
	if(DDERR_SURFACELOST==hr)
	{
		pddsBack->Restore();
		pddsBack->ReleaseDC(hdc);
	}
	if(bEnable && bShow)
	{
		if(FAILED(hr=pddsBack->BltFast(ptCaretPos.x+sizeEdit.cx,ptCaretPos.y,pdds,lprcCaret,DDBLTFAST_WAIT | DDBLTFAST_SRCCOLORKEY)))
		{
			if(DDERR_SURFACELOST==hr)
			{
				pddsBack->Restore();
				pddsBack->BltFast(ptCaretPos.x+sizeEdit.cx,ptCaretPos.y,pdds,lprcCaret,DDBLTFAST_WAIT | DDBLTFAST_SRCCOLORKEY);
			}
			else
				return hr;
		}
	}
  if(bEnable)
  {
    HandleCompPaint();
    HandleCandPaint();
  }
	return ERR_NO;
}
void CEditBar::Clear()
{
	iEditLen=0;
	iEditPos=0;
	SetNULL();
}
inline void CEditBar::SetChar(TCHAR Char)
{
	int i;
	if(iEditLen>=iEditMaxLen)
	{
		cChina=0;
		return;
	}
	if(0!=cChina)
	{
		if(iEditLen>(iEditMaxLen-2))
		{
			cChina=0;
			return;
		}
		for(i=iEditLen;i>=iEditPos;i--)
			lpstrEdit[i+2]=lpstrEdit[i];
		lpstrEdit[iEditPos++]=cChina;
		lpstrEdit[iEditPos++]=Char;
		iEditLen+=2;
		cChina=0;
	}
	else
	{
		if(Char&0x80)
		{
			cChina=Char;
			return;
		}
		for(i=iEditLen;i>=iEditPos;i--)
			lpstrEdit[i+1]=lpstrEdit[i];
		lpstrEdit[iEditPos++]=Char;
		iEditLen++;
	}
}
inline void CEditBar::DeleteChar()
{
	if(iEditPos>=iEditLen)
		return;
	int offset=1;
	if((lpstrEdit[iEditPos]&0x80)&&(iEditLen>=2))
		offset=2;
	for(int i=iEditPos;i<iEditLen;i++)
		lpstrEdit[i]=lpstrEdit[i+offset];
	iEditLen-=offset;
}
inline void CEditBar::DeleteBack()
{
	int left;
	if(0==iEditPos)
		return;
	for(int i=0;i<iEditPos;i++)
	{
		left=i;
		if(lpstrEdit[i]&0x80)
			i++;
	}
	int offset=1;
	if((lpstrEdit[left]&0x80)&&(iEditLen>=2))
		offset=2;
	for(i=left;i<iEditLen;i++)
		lpstrEdit[i]=lpstrEdit[i+offset];
	iEditLen-=offset;
	iEditPos-=offset;
}
inline void CEditBar::SetNULL()
{
	lpstrEdit[iEditLen]=NULL;
}
inline void CEditBar::GetLeft()
{
	int left;
	if(0==iEditPos)
		return;
	for(int i=0;i<iEditPos;i++)
	{
		left=i;
		if(lpstrEdit[i]&0x80)
			i++;
	}
	iEditPos=left;
}
inline void CEditBar::GetRight()
{
	if(iEditPos>=iEditLen)
		return;
	if(iEditPos<=(iEditLen-2))
	{
		if(lpstrEdit[iEditPos]&0x80)
		{
			iEditPos+=2;
			return;
		}
	}
	iEditPos+=1;
}

						