console.h

非常棒的VC入门课件

			nSize = chPos[i+1] - chPos[i] + 1;
	}

	nSize = max(nSize, (int)strlen(caption)+2);

	_SaveSettings();				// 保存以前的设置
	// 计算窗口
	int x1, y1, x2, y2;
	x1 = 0;
	y1 = 0;
	x2 = x1 + nSize + 2;
	y2 = y1 + nNum + 3;

	_CalCenterWindow(&x1, &y1, &x2, &y2);

	_DefineWindow(x1, y1, x2+1, y2+1);	// 重新定义窗口
	_SaveWindow();
	_DefineWindow(x1+1, y1+1, x2+1, y2+1);	// 重新定义窗口
	_SetBackColor(8);
	_FillBox(0,0, x2-x1+1, y2-y1+1, false);  // 阴影
	_DefineWindow(x1, y1, x2, y2);	// 重新定义窗口

	int nColor[3];
	bool bShow = true;

	switch (mode) {
		case 1:
			nColor[0] = 2;	nColor[1] = 15;  nColor[2] = 15;
			bShow = false;
			break;
		case 2:
			nColor[0] = 3;	nColor[1] = 14;  nColor[2] = 14;
			break;
		case 3:
			nColor[0] = 4;	nColor[1] = 14;  nColor[2] = 14;
			break;
		default:
			nColor[0] = m_nFrameColor[0];	
			nColor[1] = m_nFrameColor[1];  
			nColor[2] = m_nControlColor[1];
			bShow = false;
			break;
	}

	_SetBackColor(nColor[0]);
	_SetForeColor(nColor[1]);
	_ShowCursor(bShow);
	_ClearWindow();
	_DrawBox(0, 0, x2-x1+1, y2-y1+1, 1);
	_SetForeColor(nColor[2]);

	// 输出标题
	_OutTextXY((nSize - strlen(caption))/2 + 2, 0, caption);
	
	unsigned int nStart, nDispNum;
	for (i=0; i<nNum; i++)		// 输出消息文本
	{
		nStart = chPos[i];
		nDispNum = chPos[i+1]-nStart;
		_OutTextXY((nSize-nDispNum)/2+2, i+2, &str[nStart],nDispNum);
	}

	chRes = _getch();
	// 恢复原来的设置
	_LoadSettings();
	_PutWindow(x1, y1);

	return chRes;
}

char* CConUI::_InputBox(char *name, int x, int y, int nchars, bool center)
{
	_SaveSettings();				// 保存以前的设置

	if (nchars<(int)strlen(name)) nchars = (int)strlen(name);
	// 计算窗口
	int x1, y1, x2, y2;
	x1 = x;
	y1 = y;
	x2 = x1 + nchars + 2;
	y2 = y1 + 2;

	if (center)
		_CalCenterWindow(&x1, &y1, &x2, &y2);


	_DefineWindow(x1, y1, x2+1, y2+1);	// 重新定义窗口
	_SaveWindow();
	_DefineWindow(x1+1, y1+1, x2+1, y2+1);	// 重新定义窗口
	_SetBackColor(8);
	_FillBox(0,0, x2-x1+1, y2-y1+1,false);  // 阴影
	_DefineWindow(x1, y1, x2, y2);	// 重新定义窗口

	// 绘制输入框
	_SetBackColor(m_nFrameColor[0]);
	_SetForeColor(m_nFrameColor[1]);
	_ShowCursor(true);
	_ClearWindow();
	_DrawBox(0, 0, x2-x1+1, y2-y1+1);

	// 绘制提示文本
	_OutTextXY((nchars - strlen(name))/2 + 2, 0, name, strlen(name));
	_LoadSettings();

	int res, num=0;
	char strRes[256];

	//m_nCharNum = 0;

	res = _InputLine(x1+1, y1+1, nchars, m_nControlColor[0], m_nControlColor[1], strRes, &num);

	_PutWindow(x1, y1);

	if (res == 0) {
		strncpy(m_InputChars, strRes, num);
		return m_InputChars;
	} else return "";
}

int CConUI::_InputLine(int x, int y, int nlength, int bkcolor, int focolor,
					   char *str, int *nchars)
{
	_SaveSettings();				// 保存以前的设置

	// 计算窗口
	int x1, y1, x2, y2;
	x1 = x;
	y1 = y;
	x2 = x1 + nlength - 1;
	y2 = y1;

	_DefineWindow(x1, y1, x2, y2);	// 重新定义窗口

	// 绘制输入框
	_SetBackColor(bkcolor);
	_SetForeColor(focolor);
	_ClearWindow();

	int nInputCharNum = 0;
	int nCharPos = 0;	// 字符位置
	int nCursorPos;		// 光标位置，范围从0到nchars-1
	int nLeft = 0;	// 滚动的字符个数
	unsigned int ch;

	int i;

	if (m_nCharNum>0) {
		_OutTextXY(0, 0, &m_InputChars[0], min(m_nCharNum, nlength));
		nInputCharNum = m_nCharNum;
	}

	_ShowCursor(true);
	_SetCursorPos(0, 0);
	// 控制键盘输入，当按ENTER键或ESC键结束输入
	// 按ESC键后，返回NULL
	for(;;)
	{
		bool bChanged = false;
		ch = _GetKeyChar();
		// 当按下ESC、ENETR和TAB键退出
		if ((ch == VK_ESCAPE)||(ch == VK_RETURN)||(ch == VK_TAB)) break;
		if ((ch == VK_UP)||(ch == VK_DOWN)) break;
		switch (ch)
		{
			case VK_HOME:	// HOME键
				nCharPos = 0;	
				nLeft = 0;
				bChanged = true;
				break;
			case VK_END:	// END键
				nCharPos = nInputCharNum;	
				bChanged = true;
				nLeft = nCharPos - nlength;
				if (nLeft<0) nLeft = 0;
				break;
			case VK_LEFT:	// 向左
				nCharPos--;	
				if (nCharPos<0) nCharPos = 0;
				else
					bChanged = true;
				break;
			case VK_RIGHT:	// 向右
				nCharPos++;	
				if (nCharPos>nInputCharNum) 
					nCharPos = nInputCharNum;
				else
					bChanged = true;
				break;
			case VK_BACK:	// Back Space
				nCharPos--;	
				if (nCharPos<0) {
					nCharPos = 0;
					break;
				}
			case VK_DELETE:	// DEL键，删除当前字符
				for (i=nCharPos+1; i<=nInputCharNum; i++) {
					m_InputChars[i-1] = m_InputChars[i];
					bChanged = true;
				}
				if (bChanged){
					nInputCharNum--;
					if (nInputCharNum<0) {
						nInputCharNum = 0;
						bChanged = false;
					}
				}
				break;
		}

		// 显示和记录字符以及相应的光标
		if (isprint(HIBYTE(ch))) {	// 判断是否是有效字符
			for (i = nInputCharNum; i>nCharPos; i--)
				m_InputChars[i] = m_InputChars[i-1];
			m_InputChars[nCharPos] = HIBYTE(ch);
			nCharPos++;
			nInputCharNum++;
			if (nInputCharNum >= 252) nInputCharNum = 252;
			if (nCharPos >= 252) nCharPos = 252;

			bChanged = true;
		}

		if ((nCharPos - nLeft)>=nlength) 	nLeft++;

		int nCmp = 0;
		if (ch == VK_BACK) nCmp = 1;
		if ((nCharPos - nLeft)< nCmp) {
			nLeft--;
			if (nLeft<0) nLeft = 0;
		}

		if (nLeft>0) bChanged = true;

		if (bChanged) {
			_ClearWindow();
			int nNum = min(nlength-1, nInputCharNum);	// 可以显示的字符
			if ((nCharPos<nInputCharNum)&&(nInputCharNum>=nlength))
				nNum++;

			_OutTextXY(0, 0, &m_InputChars[nLeft], nNum);
			bChanged = false;

			nCursorPos = nCharPos - nLeft;
			_SetCursorPos(nCursorPos, 0);
		}
	}

	_LoadSettings();
	*nchars = nInputCharNum;
	m_nCharNum = nInputCharNum;
	if (m_nCharNum>0) {
		strncpy(str, m_InputChars, nInputCharNum);
	}
	else
		str = NULL;
	if (ch == VK_ESCAPE) return -1;
	if (ch == VK_RETURN) return 0;
	if (ch == VK_TAB) return 1;
	if (ch == VK_UP) return 2;
	if (ch == VK_DOWN) return 3;
	return -1;
}

int CConUI::_GetOptions(char **str, int x, int y,  int num, int *chpos, bool center)
{
	// 计算最长选项文本的字符个数
	unsigned int nNameSize = 10, nTitleCharNum;

	nTitleCharNum = strlen(m_strOptionsTitle);
	if (nNameSize<nTitleCharNum) nNameSize = nTitleCharNum;

	for (int i=0; i<num; i++) {
		if (nNameSize<strlen(str[i])) nNameSize = strlen(str[i]);
	}

	// 计算所需要的窗口大小
	int x1, x2, y1, y2;
	x1 = x;		y1 = y;
	x2 = x1 + nNameSize + 3;
	y2 = y1 + num + 1;

	if (center)
		_CalCenterWindow(&x1, &y1, &x2, &y2);

	_SaveSettings();

	_DefineWindow(x1, y1, x2+1, y2+1);	// 重新定义窗口
	_SaveWindow();
	_DefineWindow(x1+1, y1+1, x2+1, y2+1);	// 重新定义窗口
	_SetBackColor(8);
	_FillBox(0,0, x2-x1+1, y2-y1+1, false);  // 阴影
	_DefineWindow(x1, y1, x2, y2);	// 重新定义窗口

	_ShowCursor(false);

	// 绘制窗口
	_SetBackColor(m_nFrameColor[0]);
	_SetForeColor(m_nFrameColor[1]);
	_ClearWindow();
	_DrawBox(0, 0, x2-x1+1, y2-y1+1);

	// 输出标题
	_OutTextXY((nNameSize - nTitleCharNum)/2 + 2, 0, m_strOptionsTitle);


	int posX = 2, posY = 1, n;

	// 绘制并解析菜单
	m_nMenuItemNum = 0;
	for (i=0; i<num; i++) {
		if ((str[i][0] == '-')||(str[i][0] == '_')){
			_SetForeColor(m_nFrameColor[1]);
			_DrawCharLine(1,posY,nNameSize+2, (char)0xc4);
		} else {
			_SetForeColor(m_nControlColor[1]);
			_OutTextXY(posX, posY, str[i]);

			if (chpos) 
				n = chpos[i];
			else 
				n = 0;
			
			char chItem = (char)toupper(str[i][n]);
			_SetForeColor(m_nMenuColor[2]);
			_OutTextXY(posX + n, posY, &chItem, 1);

			menuItem[m_nMenuItemNum].chPos = n;
			menuItem[m_nMenuItemNum].chItem = chItem;
			menuItem[m_nMenuItemNum].itemPos = posY;
			strcpy(menuItem[m_nMenuItemNum].itemName, str[i]);
			m_nMenuItemNum++;
		}
		posY++;
	}

	// 控制键盘输入，当按ENTER键或ESC键或有效的字符结束输入
	// 按ESC键后，返回-1

	static int nSelectItemNext = 0;

	if (nSelectItemNext<0) nSelectItemNext = 0;
	if (nSelectItemNext>(m_nMenuItemNum-1)) nSelectItemNext = 0;

	int nSelectItem = nSelectItemNext, ch, nBak = nSelectItem;
	bool bOK = false;

	// 绘制选择的文本
	_SetBackColor(m_nMenuColor[0]);
	_SetForeColor(m_nMenuColor[1]);
	posY = menuItem[nSelectItem].itemPos;
	_FillBox(posX - 1, posY, nNameSize+2, 1, false);

	for(;;)
	{
		bool bChanged = false;
		ch = _GetKeyChar();
		// 当按下ESC、ENETR和TAB键退出
		if ((ch == VK_ESCAPE)||(ch == VK_RETURN)) break;
		if ((ch == VK_LEFT)||(ch == VK_RIGHT)) break;

		char c = HIBYTE(ch);
		if (isprint(c)) {	// 判断是否是有效字符
			c = (char)toupper(c); 
			for (int i=0; i<m_nMenuItemNum; i++)
			{
				if (c == menuItem[i].chItem) {
					bOK = TRUE;
					nSelectItem = i;
					break;
				}
			}
			if (bOK) break;
		}

		switch (ch)
		{
			case VK_UP:	// 向上
				nSelectItem--;
				if (nSelectItem<0)
					nSelectItem = m_nMenuItemNum - 1;
				bChanged = true;
				break;
			case VK_DOWN:	// 向下
				nSelectItem++;
				if (nSelectItem>(m_nMenuItemNum-1))
					nSelectItem = 0;
				bChanged = true;
				break;
		}

		if (bChanged){
			bChanged = false;

			// 恢复原来的文本
			_SetBackColor(m_nFrameColor[0]);
			_SetForeColor(m_nControlColor[1]);

			posY = menuItem[nBak].itemPos;
			_FillBox(posX - 1, posY, nNameSize+2, 1, false);
			_SetForeColor(m_nMenuColor[2]);
			char chItem = menuItem[nBak].chItem;
			_OutTextXY(posX + menuItem[nBak].chPos, posY, &chItem, 1);

			// 绘制选择的文本
			nBak = nSelectItem;
			posY = menuItem[nBak].itemPos;
			_SetBackColor(m_nMenuColor[0]);
			_SetForeColor(m_nMenuColor[1]);
			_FillBox(posX - 1, posY, nNameSize+2, 1, false);

		}
	}
	
	_PutWindow(x1, y1);
	_LoadSettings();

	nSelectItemNext = nSelectItem;

	if (ch == VK_RETURN) bOK = true;

	if (bOK) {
		return nSelectItem;
	}
	else
		return -1;
}

void CConUI::_CalCenterWindow(int *x1, int *y1, int *x2, int *y2)
{
	int nSizeX, nSizeY;
	_GetConwinSize(&nSizeX, &nSizeY);

	int w = (*x2 - *x1);
	int h = (*y2 - *y1);

	*x1 = (nSizeX - w)/2;
	*y1 = (nSizeY - h)/2;
	*x2 = *x1 + w;
	*y2 = *y1 + h;
}