您的位置:首页 > 其它

VS2008中添加Splash screen控件

2015-11-30 14:01 387 查看
在VC6.0中,可以通过添加Splash组件,然后在工程调用组件中提供的函数,就可以实现。但是在VS2008中却没有这样的组件(我自己找了好久,没找到,网上查阅也没有相关资料)。在查阅了相关资料后总结如下

1、需要自己添加一个专门的类C SplashWnd。
代码如下:

//////////////////////////////////////////////////////////////////////////////SplashWnd.h
#ifndef _SPLASH_HEADER_
#define_SPLASH_HEADER_

#pragmaonce
//#include "afxwin.h"

//CSplashWnd

classCSplashWnd :public
CWnd

{
//DECLARE_DYNAMIC(CSplashWnd)

public:

CSplashWnd();
virtual~CSplashWnd();
virtualvoid
PostNcDestroy();

public:

CBitmap m_bitmap;

protected:
staticBOOL c_bShowSplashWnd;
staticCSplashWnd*c_pSplashWnd;

public:
staticvoid
EnableSplashScreen(BOOL bEnable=
TRUE);
staticvoid
ShowSplashScreen(CWnd*pParentWnd=
NULL);
staticBOOL PreTranslateAppMessage(MSG*pMsg);

protected:

BOOL Create(CWnd*pParentWnd=
NULL);
voidHideSplashScreen();

afx_msg
int OnCreate(LPCREATESTRUCT lpCreateStruct);

afx_msg
void OnPaint();

afx_msg
void OnTimer(UINT nIDEvent);

protected:

DECLARE_MESSAGE_MAP()

};

#endif

/////////////////////////////////////////////////////////////////// SplashWnd.cpp
//SplashWnd.cpp
: 实现文件
//

#include
"stdafx.h"

#include
"resource.h"

#include
"SplashWnd.h"

//CSplashWnd

//IMPLEMENT_DYNAMIC(CSplashWnd, CWnd)

BOOL CSplashWnd::c_bShowSplashWnd
= FALSE;

CSplashWnd*CSplashWnd::c_pSplashWnd;

CSplashWnd::CSplashWnd()

{

}

CSplashWnd::~CSplashWnd()

{
//Clear the static window pointer.
ASSERT(c_pSplashWnd==

this);

c_pSplashWnd
= NULL;

}

BEGIN_MESSAGE_MAP(CSplashWnd, CWnd)

ON_WM_CREATE()

ON_WM_PAINT()

ON_WM_TIMER()

END_MESSAGE_MAP()

voidCSplashWnd::EnableSplashScreen(BOOL bEnable)

{

c_bShowSplashWnd
= bEnable;

}

voidCSplashWnd::ShowSplashScreen(CWnd*pParentWnd)

{
if(!c_bShowSplashWnd||
c_pSplashWnd
!=
NULL)
return;
//Allocate a new splash screen, and create the window.
c_pSplashWnd=

new CSplashWnd;
if(!c_pSplashWnd->Create(pParentWnd))

delete c_pSplashWnd;
else

c_pSplashWnd->UpdateWindow();

}

BOOL CSplashWnd::PreTranslateAppMessage(MSG*pMsg)

{
if(c_pSplashWnd==
NULL)
returnFALSE;

//If we get a keyboard or mouse message, hide the splash screen.
if(pMsg->message==
WM_KEYDOWN
||

pMsg->message==
WM_SYSKEYDOWN
||

pMsg->message==
WM_LBUTTONDOWN
||

pMsg->message==
WM_RBUTTONDOWN
||

pMsg->message==
WM_MBUTTONDOWN
||

pMsg->message==
WM_NCLBUTTONDOWN
||

pMsg->message==
WM_NCRBUTTONDOWN
||

pMsg->message==
WM_NCMBUTTONDOWN)

{

c_pSplashWnd->HideSplashScreen();
returnTRUE;

//
message handled here
}

returnFALSE;

//
message not handled
}

BOOL CSplashWnd::Create(CWnd*pParentWnd)

{
if(!m_bitmap.LoadBitmap(IDB_SPLASH))
returnFALSE;

BITMAP bm;

m_bitmap.GetBitmap(&bm);

returnCreateEx(0,

AfxRegisterWndClass(0, AfxGetApp()->LoadStandardCursor(IDC_ARROW)),

NULL, WS_POPUP
| WS_VISIBLE,0,0,
bm.bmWidth, bm.bmHeight, pParentWnd->GetSafeHwnd(), NULL);

}

voidCSplashWnd::HideSplashScreen()

{
//Destroy the window, and update the mainframe.
DestroyWindow();

AfxGetMainWnd()->UpdateWindow();

}

voidCSplashWnd::PostNcDestroy()

{
//Free the C++ class.
deletethis;

}

intCSplashWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)

{
if(CWnd::OnCreate(lpCreateStruct)==
-1)
return-1;

//Center the window.
CenterWindow();

//Set a timer to destroy the splash screen.
SetTimer(1,1000,
NULL);

return0;

}

voidCSplashWnd::OnPaint()

{

CPaintDC dc(this);

CDC dcImage;
if(!dcImage.CreateCompatibleDC(&dc))
return;

BITMAP bm;

m_bitmap.GetBitmap(&bm);

//Paint the image.
CBitmap*pOldBitmap=
dcImage.SelectObject(&m_bitmap);

dc.BitBlt(0,0,
bm.bmWidth, bm.bmHeight,&dcImage,0,0,
SRCCOPY);

dcImage.SelectObject(pOldBitmap);

}

voidCSplashWnd::OnTimer(UINT nIDEvent)

{
//Destroy the splash screen window.
HideSplashScreen();

}

////////////////////////////////////////////////////////////////////////////////////

2、 在App主程序实现代码中把上面的头文件包含进去,并在InitInstance函数中添加下面一段代码
CCommandLineInfo
cmdInfo;

ParseCommandLine(cmdInfo);

CSplashWnd::EnableSplashScreen(cmdInfo.m_bShowSplash);

【注意】  CCommandLineInfo cmdInfo; 
ParseCommandLine(cmdInfo);这两句代码已经在 InitInstance函数中存在,只需将最后一句代码加上即可。

3、 最后,在主框架窗口实现代码中包含Splash头文件,在OnCreate函数return前调用CSplashWnd类的ShowSplashScreen函数即可。 
//显示Splash窗口
CSplashWnd::ShowSplashScreen(this)

4、按照上面的顺序不能完成此功能,原因如下:
08中MFC中的 InitInstance函数, 默认的代码大致是:

// 创建主 MDI 框架窗口
CMainFrame* pMainFrame = new CMainFrame;
if (!pMainFrame || !pMainFrame->LoadFrame(IDR_MAINFRAME))
{
delete pMainFrame;
return FALSE;
}
m_pMainWnd = pMainFrame;

// 分析标准外壳命令、DDE、打开文件操作的命令行

CCommandLineInfo cmdInfo;

ParseCommandLine(cmdInfo);

即默认是先建立框架,再解析命令行。也就是限执行MainFrame里面的 OnCreate函数里面中的3,再执行2。在里面跟踪一下,就会发现,这样就无法满足执行条件而无法完成功能。

解决方法:把CCommandLineInfo cmdInfo;ParseCommandLine(cmdInfo);
CSplashWnd::EnableSplashScreen(cmdInfo.m_bShowSplash);

三行代码放到Instance函数的最前面即可!

5、这里面的图片是需要先将文件中的图片导入资源中, 【提醒】只能导入BMP图像,如果不是,可以先用Photoshop处理下。 【特别提醒】导入的BMP的大小要有限制, Photoshop里面也有调节图像大小功能,

一般像素宽度和高度大于700多(经验值,具体可以自己实验下),调用系统函数加载图像时,就会失败。

m_bitmap.LoadBitmap(IDB_SPLASH)

以上为个人使用经验之谈,如有不足,请留言指正!

转载地址:http://my.oschina.net/tjguo/blog/12742
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: