MFC添加启动splash

最新推荐文章于 2020-08-06 10:48:20 发布

转载最新推荐文章于 2020-08-06 10:48:20 发布 · 646 阅读

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本文介绍如何使用MFC实现应用程序的启动画面。通过创建自定义类mySplash继承CWnd，并重写消息映射来实现加载位图资源及定时销毁启动画面窗口的功能。

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添加启动类

添加.h和cpp

#pragma once
#include "afxwin.h"
class mySplash :
    public CWnd
{
    DECLARE_DYNAMIC(mySplash)

protected:

    DECLARE_MESSAGE_MAP()

public:

    CBitmap m_bitmap;

    void Create(UINT nBitmapID);

    afx_msg void OnPaint();

    afx_msg void OnTimer(UINT_PTR nIDEvent);
public:
    mySplash(void);
    ~mySplash(void);
};

#include "stdafx.h"

#include "mySplash.h"

IMPLEMENT_DYNAMIC(mySplash, CWnd)

mySplash::mySplash()

{

}

mySplash::~mySplash()

{

}

BEGIN_MESSAGE_MAP(mySplash, CWnd)

    ON_WM_PAINT()

    ON_WM_TIMER()

END_MESSAGE_MAP()

void mySplash::Create(UINT nBitmapID)

{

    m_bitmap.LoadBitmap(nBitmapID);

    BITMAP bitmap;

    m_bitmap.GetBitmap(&bitmap);

    CreateEx(0,AfxRegisterWndClass(0, AfxGetApp()->LoadStandardCursor(IDC_ARROW)),NULL, WS_POPUP | WS_VISIBLE, 0, 0, bitmap.bmWidth, bitmap.bmHeight, NULL, NULL);

}

void mySplash::OnPaint()

{

    CPaintDC dc(this); 

    BITMAP bitmap;

    m_bitmap.GetBitmap(&bitmap);

    CDC dcComp;

    dcComp.CreateCompatibleDC(&dc);

    dcComp.SelectObject(&m_bitmap);

    dc.BitBlt(0, 0, bitmap.bmWidth, bitmap.bmHeight, &dcComp, 0, 0, SRCCOPY);

}

void mySplash::OnTimer(UINT_PTR nIDEvent)

{
    DestroyWindow(); //销毁初始画面窗口
}

而后在initdialog中添加

mySplash wndSplash; //创建启动窗口类的实例
wndSplash.Create(IDB_BITMAP1);
wndSplash.CenterWindow();
wndSplash.UpdateWindow(); //send WM_PAINT
Sleep(2500);
wndSplash.DestroyWindow();//销毁初始画面窗口