本文实例为大家分享了MFC对话框实现梯形分页的具体代码，供大家参考，具体内容如下
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// MFCDlg.h: 头文件
//
#pragma once
#include "CMemoCtrl.h"
// CMFCDlg 对话框
class CMFCDlg : public CDialogEx
{
// 构造
CMemoCtrl m_Memo;
public:
CMFCDlg(CWnd* pParent = nullptr); // 标准构造函数
// 对话框数据
#ifdef AFX_DESIGN_TIME
enum { IDD = IDD_MFC_DIALOG };
#endif
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持
// 实现
protected:
HICON m_hIcon;
// 生成的消息映射函数
virtual BOOL OnInitDialog();
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
DECLARE_MESSAGE_MAP()
};
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// MFCDlg.cpp: 实现文件
//
#include "pch.h"
#include "framework.h"
#include "MFC.h"
#include "MFCDlg.h"
#include "afxdialogex.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CMFCDlg 对话框
CMFCDlg::CMFCDlg(CWnd* pParent /*=nullptr*/)
: CDialogEx(IDD_MFC_DIALOG, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMFCDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CMFCDlg, CDialogEx)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
END_MESSAGE_MAP()
// CMFCDlg 消息处理程序
BOOL CMFCDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
CRect rect;
GetClientRect(rect);
rect.top = rect.bottom - 18;
m_Memo.Create(5, rect, this, 8088);
m_Memo.SetFont(GetFont());
m_Memo.InsertItem(0,_T("断点"));
m_Memo.InsertItem(1,_T("异常设置"));
m_Memo.InsertItem(2,_T("输出"));
m_Memo.InsertItem(3,_T("查找"));
// 设置此对话框的图标。 当应用程序主窗口不是对话框时，框架将自动
// 执行此操作
SetIcon(m_hIcon, TRUE); // 设置大图标
SetIcon(m_hIcon, FALSE); // 设置小图标
return TRUE; // 除非将焦点设置到控件，否则返回 TRUE
}
void CMFCDlg::OnPaint()
{
CPaintDC dc(this);
CDialogEx::OnPaint();
}
//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CMFCDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
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//CMemoCtrl.h
#pragma once
#include <afxwin.h>
class CMemoCtrl :
public CWnd
{
int m_nLeft;
int m_nIndex;
HCURSOR m_hCursor;
CArray<CString> m_aItems;
CArray<CRect> m_rc;
CFont m_font;
public:
CMemoCtrl();
BOOL Create(int nIndex, const RECT& rect, CWnd* pParentWnd, UINT nID);
DECLARE_MESSAGE_MAP()
afx_msg void OnPaint();
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
public:
void InsertItem(int nIndex,CString szItemName);
void SetFont(CFont* pFont);
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
};
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//CMemoCtrl.cpp
#include "pch.h"
#include "CMemoCtrl.h"
CMemoCtrl::CMemoCtrl()
{
m_nLeft = 0;
m_nIndex = 0;
m_hCursor = ::LoadCursor(NULL,IDC_HAND);
}
BOOL CMemoCtrl::Create(int nCount, const RECT& rect, CWnd* pParentWnd, UINT nID)
{
return CWnd::Create(NULL, NULL, WS_CHILD|WS_VISIBLE, rect, pParentWnd, nID);
}
BEGIN_MESSAGE_MAP(CMemoCtrl, CWnd)
ON_WM_PAINT()
ON_WM_LBUTTONDOWN()
ON_WM_MOUSEMOVE()
END_MESSAGE_MAP()
void CMemoCtrl::OnPaint()
{
CPaintDC dc(this);
CRect rect, rt, rc;
GetClientRect(rect);
rt = rect;
int i = 0;
CSize size;
CPoint p[5];
m_nLeft = 8;
m_rc.SetSize(m_aItems.GetSize());
CBrush br(GetSysColor(COLOR_3DFACE));
dc.FillRect(rect, &br);
CFont* pOldFont = dc.SelectObject(&m_font);
while (i<m_aItems.GetSize())
{
size = dc.GetTextExtent(m_aItems[i]);
rt.left = m_nLeft;
p[1].SetPoint(m_nLeft - 8, rt.top);
p[2].SetPoint(m_nLeft + 4, rt.bottom);
rt.right = m_nLeft+ size.cx + rect.Height();
m_rc.SetAt(i, rt);
m_nLeft = rt.right;
p[3].SetPoint(m_nLeft - 4, rt.bottom);
p[4].SetPoint(m_nLeft, rt.bottom -6);
p[0].SetPoint(m_nLeft - 8, rt.top);
//dc.SetBkColor(RGB(255, 255, 255));
dc.SetBkMode(TRANSPARENT);
if (i == m_aItems.GetSize() - 1)
{
//最后一个设置
p[0].SetPoint(rect.right, rt.top);
p[4].SetPoint(m_nLeft + 8, rt.top);
dc.MoveTo(p[4]);
dc.LineTo(p[0]);
}
if (i != m_nIndex)
{
dc.SelectObject(&m_font);
dc.MoveTo(p[0]);
dc.Polyline(p, 5);
dc.DrawText(m_aItems.GetAt(i), rt, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
}
else
{
rc = rt;
}
//TRACE("%d,(%d,%d),(%d,%d),(%d,%d)\n",m_nLeft, p[0].x, p[0].y,p[2].x,p[2].y, p[4].x, p[4].y);
i++;
}
p[0].SetPoint(rc.left -8,rc.top);
p[1].SetPoint(rc.left + 4, rc.bottom);
p[2].SetPoint(rc.right - 4, rc.bottom);
p[3].SetPoint(rc.right + 8, rc.top);
CBrush brc(RGB(255, 255, 255));
dc.SelectObject(brc);
dc.Polygon(p, 4);
CPen pen(PS_SOLID,1,RGB(255, 255, 255));
dc.SelectObject(pen);
p[0].Offset(1, 0);
dc.MoveTo(p[0]);
dc.LineTo(p[3]);
dc.SelectObject(pOldFont);
dc.DrawText(m_aItems.GetAt(m_nIndex), rc, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
}
void CMemoCtrl::OnLButtonDown(UINT nFlags, CPoint point)
{
for (int i = 0; i < m_rc.GetSize(); i++)
{
if (m_rc.GetAt(i).PtInRect(point))
{
m_nIndex = i;
Invalidate();
}
}
CWnd::OnLButtonDown(nFlags, point);
}
void CMemoCtrl::InsertItem(int nIndex, CString szItemName)
{
m_aItems.InsertAt(nIndex, szItemName);
}
void CMemoCtrl::SetFont(CFont* pFont)
{
if (!pFont)
return;
LOGFONT lf;
pFont->GetLogFont(&lf);
if(m_font.GetSafeHandle())
m_font.DeleteObject();
m_font.CreateFontIndirect(&lf);
}
void CMemoCtrl::OnMouseMove(UINT nFlags, CPoint point)
{
for (int i = 0; i < m_rc.GetSize(); i++)
{
if (m_rc.GetAt(i).PtInRect(point))
{
SetCursor(m_hCursor);
}
}
CWnd::OnMouseMove(nFlags, point);
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/weixin_42330311/article/details/103674646
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