MFC dialog box to achieve the effect of the horse
- 2020-09-28 09:03:34
- OfStack
The example of this paper shares the display effect of MFC dialog box and text information playing in a loop for your reference. The specific content is as follows
CMFCDlg. h dialog
// CMFCDlg.h dialog
class CMFCDlg : public CDialogEx
{
// structure
public:
CMFCDlg(CWnd* pParent = nullptr); // Standard constructor
// Dialog data
#ifdef AFX_DESIGN_TIME
enum { IDD = IDD_DLG_M };
#endif
// implementation
protected:
HICON m_hIcon;
int m_nLeft;
CString m_szText;
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
// The generated message mapping function
virtual BOOL OnInitDialog();
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
DECLARE_MESSAGE_MAP()
public:
afx_msg void OnTimer(UINT_PTR nIDEvent);
};
MFCDlg. cpp: Implementation file
// MFCDlg.cpp: Implementation file
#include "pch.h"
#include "framework.h"
#include "MFC.h"
#include "MFCDlg.h"
#include "afxdialogex.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CMFCDlg dialog
CMFCDlg::CMFCDlg(CWnd* pParent /*=nullptr*/)
: CDialogEx(IDD_DLG_M, pParent)
{
m_szText = _T(" This is a 1 A looping message ");
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()
ON_WM_TIMER()
END_MESSAGE_MAP()
// CMFCDlg Message handler
BOOL CMFCDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
// Sets the icon for this dialog box. When the main window of the application is not a dialog box, the framework will automatically
// Perform this operation
SetIcon(m_hIcon, TRUE); // Set the big icon
SetIcon(m_hIcon, FALSE); // Set the little icon
CRect rect;
GetClientRect(rect);
m_nLeft = rect.right;
SetTimer(1, 60, NULL);
return TRUE; // Returns unless focus is set to the control TRUE
}
// If you add a minimize button to the dialog box, you need the following code
// To draw the icon. For working with documents / Viewmodel MFC The application,
// This will be done automatically by the framework.
void CMFCDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // The device context used to draw
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// Center the icon in the workspace rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialogEx::OnPaint();
}
}
// The system calls this function to get the cursor when the user drags the minimize window
// Display.
HCURSOR CMFCDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void CMFCDlg::OnTimer(UINT_PTR nIDEvent)
{
CRect rt;
GetClientRect(rt);
CClientDC dc(this);
dc.SetBkColor(GetSysColor(COLOR_3DFACE));
dc.SelectObject(GetFont());
CSize size = dc.GetOutputTextExtent(m_szText);
dc.TextOut(m_nLeft, rt.Height() - size.cy, m_szText);
m_nLeft -= 5;
if (m_nLeft + size.cx <= 0)
m_nLeft = rt.right;
CDialogEx::OnTimer(nIDEvent);
}