孙鑫VC学习笔记：第五讲文本编程

1.创建插入符
CWnd::CreateSolidCaret
MSDN
-------------------------------------------------------------------------------------
CWnd::CreateSolidCaret
Creates a solid rectangle for the system caret and claims ownership of the caret.

void CreateSolidCaret(
int nWidth, //插入符的宽度,为0,表示系统定义的窗口边界宽度
int nHeight //插入符的高度,为0,表示系统定义的窗口边界高度
);
The system's window-border width or height can be retrieved by the
GetSystemMetrics Windows function with the SM_CXBORDER and SM_CYBORDER indexes.

To show the caret, the ShowCaret member function must be called.
------------------------------------------------------------------------------------

2.获得文本信息
CDC::GetTextMetrics
------------------------------------------------------------------------------------
Retrieves the metrics for the current font using the attribute device context.

BOOL GetTextMetrics(
    LPTEXTMETRIC lpMetrics
) const;
------------------------------------------------------------------------------------
TEXTMETRIC
------------------------------------------------------------------------------------
typedef struct tagTEXTMETRIC {
    LONG tmHeight;                   //字体的高度
    LONG tmAscent;                   //基线以上的部分的长度
    LONG tmDescent;                  //基线以下的地方
    LONG tmInternalLeading;
    LONG tmExternalLeading;
    LONG tmAveCharWidth;             //平均字符宽度
    LONG tmMaxCharWidth;             //最大字符宽度
    LONG tmWeight;
    LONG tmOverhang;
    LONG tmDigitizedAspectX;
    LONG tmDigitizedAspectY;
    TCHAR tmFirstChar;
    TCHAR tmLastChar;
    TCHAR tmDefaultChar;
    TCHAR tmBreakChar;
    BYTE tmItalic;
    BYTE tmUnderlined;
    BYTE tmStruckOut;
    BYTE tmPitchAndFamily;
    BYTE tmCharSet;
  } TEXTMETRIC, *PTEXTMETRIC;
-------------------------------------------------------------------------------------
TextView.CPP
------------------------------------------------------------------------------------
int CTextView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
  return -1;

// TODO: Add your specialized creation code here
CClientDC dc(this);
TEXTMETRIC tm;

dc.GetTextMetrics(&tm);

CreateSolidCaret(tm.tmAveCharWidth/8,tm.tmHeight); //创建插入符
ShowCaret(); //显示插入符

return 0;
}
-------------------------------------------------------------------------------------
3.创建图形插入符.
CWnd::CreateCaret
MSDN
-----------------------------------------------------------------------------------
CWnd::CreateCaret
Creates a new shape for the system caret and claims ownership of the caret.

void CreateCaret(
CBitmap* pBitmap
);
------------------------------------------------------------------------------------
4.输出文字
CTextView::OnDraw(CDC *pDC)函数当窗口发生重绘的时候,就会被应用程序的框架所调用.

5.字符串类CString
CString的构造函数
MSDN
----------------------------------------------------------------------------------
   CString();
   CString(const CString& stringSrc);
   throw(CMemoryException);

CString(TCHAR ch, int nRepeat = 1);
   throw(CMemoryException);

   CString(LPCTSTR lpch, int nLength);
   throw(CMemoryException);

   CString( const unsigned char* psz);
   throw(CMemoryException);

   CString(LPCWSTR lpsz);
   throw(CMemoryException);

   CString(LPCSTR lpsz);
   throw(CMemoryException);
------------------------------------------------------------------------------------

LoadString
MSDN
-----------------------------------------------------------------------------------
CString::LoadString
The LoadStringW method reads a Windows string resource (identified by nID) into
an existing CString object.

int LoadStringW(
   UINT nID
   ) throw (CHeap_Exception);
----------------------------------------------------------------------------------
TextView.CPP
------------------------------------------------------------------------------------
void CTextView::OnDraw(CDC* pDC)
    {
CTextDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
//CString str="Hello Visual C++!";
CString str;
//str="Hello Visual C++!";
str.LoadString(IDS_HELLOVC);
pDC->TextOut(50,50,str);
    }

-------------------------------------------------------------------------------------

6.创建路径
CDC::BeginPath函数
MSDN
------------------------------------------------------------------------------------
CDC::BeginPath //打开路径
Opens a path bracket in the device context.

BOOL BeginPath( );
-------------------------------------------------------------------------------------
CDC::GetTextExtent //
MSDN
-------------------------------------------------------------------------------------
CDC::GetTextExtent
Call this member function to compute the width and height of a line of text using
the current font to determine the dimensions.

CSize GetTextExtent(
    LPCTSTR lpszString,
    int nCount
) const;
CSize GetTextExtent(
    const CString& str
) const;
------------------------------------------------------------------------------------

MSDN
------------------------------------------------------------------------------------
CDC::SelectClipPath
Selects the current path as a clipping region for the device context, combining
he new region with any existing clipping region by using the specified mode.

BOOL SelectClipPath(
    int nMode
);
RGN_DIFF   The new clipping region includes the areas of the current clipping
region, and those of the current path are excluded.
------------------------------------------------------------------------------------
选择当前的路径作为一个剪切区域,联合新的区域和一个现存的剪切区域按照指定的模式进行互
操作

TextView.CPP
------------------------------------------------------------------------------------
void CTextView::OnDraw(CDC* pDC)
    {
  CTextDoc* pDoc = GetDocument();
  ASSERT_VALID(pDoc);
  // TODO: add draw code for native data here
  //CString str="Hello Visual C++!";
  CString str;
  str="Hello Visual C++!";
  pDC->TextOut(50,50,str);
  CSize sz=pDC->GetTextExtent(str);

pDC->BeginPath();
  pDC->Rectangle(50,50,50+sz.cx,50+sz.cy);
  pDC->EndPath();
  pDC->SelectClipPath(RGN_AND);
  for (int i=0; i<300; i+=10)
  {
   pDC->MoveTo(0,i);
   pDC->LineTo(300,i);
   pDC->MoveTo(i,0);
   pDC->LineTo(i,300);
  }
    }

-------------------------------------------------------------------------------------

7.实现字符输出的功能
   移动插入符:
   CWnd::SetCaretPos
   ------------------------------------------------------------------------------
   CWnd::SetCaretPos
  Sets the position of the caret.

static void PASCAL SetCaretPos(
     POINT point       //静态方法,设置插入符的位置
  );
-----------------------------------------------------------------------------
获取窗口的背景色:
CDC::GetBKColor
MSDN
--------------------------------------------------------------------------------
CDC::GetBkColor
  Returns the current background color.

COLORREF GetBkColor( ) const;
-------------------------------------------------------------------------------
   设置文本的颜色
   CDC::SetTextColor
   MSDN
   ---------------------------------------------------------------------------------
   CDC::SetTextColor
Sets the text color to the specified color.

virtual COLORREF SetTextColor(
COLORREF crColor
);

Return Value
An RGB value for the previous text color.
---------------------------------------------------------------------------
截取字符串函数
CString::Left
MSDN
-------------------------------------------------------------------------------
CString::Left
The Left method extracts the first (that is, leftmost) nCount characters from
a CHString string and returns a copy of the extracted substring. If nCount
exceeds the string length, then the entire string is extracted.

CString Left(
int nCount
) const throw (CHeap_Exception);
---------------------------------------------------------------------------------
CString::GetLength
MSDN
----------------------------------------------------------------------------
CString::GetLength
The GetLength method gets a count of the number of wide characters in this
CString string. The count does not include a NULL terminator.

int GetLength();
--------------------------------------------------------------------------------

8.创建字体
CFont类
CFont::CFont构造函数
MSDN
----------------------------------------------------------------------------------
CFont::CFont
Constructs a CFont object.

CFont( );
Remarks
The resulting object must be initialized with CreateFont, CreateFontIndirect,
CreatePointFont, or CreatePointFontIndirect before it can be used.
----------------------------------------------------------------------------------

-----------------------------------------------------------------------------------
CFont::CreatePointFont
This function provides a simple way to create a font of a specified typeface
and point size.

BOOL CreatePointFont(
    int nPointSize,            //设置字体的大小
    LPCTSTR lpszFaceName,      //设置字体的名字
    CDC* pDC = NULL            //转换字体的大小为逻辑单位
);
---------------------------------------------------------------------------------

9.制作卡拉OK字幕.

CDC::DrawText
MSDN
---------------------------------------------------------------------------------
CDC::DrawText
Call this member function to format text in the given rectangle. To specify
additional formatting options, use CDC::DrawTextEx.

virtual int DrawText(
    LPCTSTR lpszString,
    int nCount,
    LPRECT lpRect,                   //输出的范围
    UINT nFormat                     //输出的格式
);
int DrawText(
    const CString& str,
    LPRECT lpRect,
    UINT nFormat
);
----------------------------------------------------------------------------------
设置定时器CWnd::SetTimer
MSDN
-----------------------------------------------------------------------------------
CWnd::SetTimer
Installs a system timer.

UINT_PTR SetTimer(
     UINT_PTR nIDEvent,                //非0的定时器标识
     UINT nElapse,                     //发送定时器消息的间隔时间(单位:0.001s)
     void (CALLBACK* lpfnTimer         //回调函数指针,当我们设定好回调函数,那么
  )(HWND,                              //WM_TIMER消息被放到应用程序消息队列,由
     UINT,                             //CWnd对象进行处理
     UINT_PTR,
     DWORD
  )
  );

孙鑫VC学习笔记：第五讲文本编程相关推荐

孙鑫VC++学习笔记（转载至程序员之家--虎非龙）[11--15] .
第11课 1.创建4个菜单,为其添加消息响应,用成员变量保存绘画类型.添加LButtonDown和Up消息. 2.当窗口重绘时,如果想再显示原先画的数据,则需要保存数据.为此创建一个新类来记录绘画类型 ...
孙鑫VC++学习笔记（转载至程序员之家--虎非龙）[11--15]
第11课 1.创建4个菜单,为其添加消息响应,用成员变量保存绘画类型.添加LButtonDown和Up消息. 2.当窗口重绘时,如果想再显示原先画的数据,则需要保存数据.为此创建一个新类来记录绘画类型 ...
孙鑫VC学习笔记：第七讲
七.对话框 2006年8月5日 14:25 因为笔记是用OneNote做的,上传以后为看不到图片,于是我截图放到相册上面, 相册地址为:http://photo.163.com/photos/good ...
mfc编程孙鑫_孙鑫MFC学习笔记7：对话框编程（上）
1.DoModal创建模态对话框 2.Create创建非模态对话框(需要用ShowWindow显示出来) 模态:对话框显示,程序会暂停,直到对话框关闭非模态:对话框显示,程序继续执行 3.对于模态对 ...
孙鑫VC学习系列教程
教程简介 1.循序渐进从Win32SDK编程开始讲解,帮助大家理解掌握Windows编程的核心 -- 消息循环机制. 2.通俗易懂编程语言枯燥难懂,然而通过孙鑫老师形象化的讲解,Windows和M ...
孙鑫VC++讲座笔记-(6)菜单编程
1,弹出菜单(Pop-up)是不能用来作命令响应的. 2,MFC中菜单项消息如果利用ClassWizard来对菜单项消息分别在上述四个类中进行响应,则菜单消息传递顺序:View类--Doc类--CMa ...
孙鑫mfc学习笔记第十四课
第十四课网络的相关知识,网络程序的编写,Socket是连接应用程序与网络驱动程序的桥梁,Socket在应用程序中创建,通过bind与驱动程序建立关系.此后,应用程序送给Socket的数据,由Sock ...
孙鑫MFC学习笔记1.Windows应用程序运行机理
1.MSG结构 hwnd:窗口句柄 message:消息类型 wParam & lParam:消息的附加信息(比如键值) time:消息被投递的时间 tip:typedef的作用是从变量类型区 ...
mfc编程孙鑫_孙鑫VC++视频教程笔记-(3)MFC程序框架的剖析附1－SDI程序流程图
1,寻找WinMain人口: 在安装目录下找到MFC文件夹下的SRC文件夹,SRC下是MFC源代码. 路径:MFC|SRC|APPMODUL.CPP: _tWinMain(HINSTANCE hIns ...
mfc编程孙鑫_孙鑫MFC学习笔记6:菜单编程
1.对菜单响应的顺序: 视类,文档类,框架类,应用程序类 2.消息的分类 3.CWnd继承自CCmdTarget类, 所以从CWnd派生出的类也可以接收WM_COMMAND消息 4.命令的消息路由 5 ...

孙鑫VC学习笔记：第五讲文本编程

孙鑫VC学习笔记：第五讲文本编程相关推荐

最新文章

热门文章

孙鑫VC学习笔记：第五讲 文本编程

孙鑫VC学习笔记：第五讲 文本编程相关推荐

最新文章

热门文章

孙鑫VC学习笔记：第五讲文本编程

孙鑫VC学习笔记：第五讲文本编程相关推荐