Knowledge Base Nr: 00308 splashscreen.cpp - http://www.swe-kaiser.de

MFC: Win32: Splashscreen (Hinweisfenster während Programmstart)

  
//sample usage:
BOOL CDemoApp::InitInstance()
{
    //splash screen
    CSplashScreen wSplashScreen;

    wSplashScreen.Create(IDB_SPLASHSCREEN);
    wSplashScreen.UpdateWindow();
...
}

//in resource bitmap IDB_SPLASHSCREEN anlegen

// SplashScreen.h:
class CSplashScreen : public CWnd
{
    DECLARE_DYNAMIC(CSplashScreen)

public:
    CSplashScreen();
    virtual ~CSplashScreen();

    void Create(UINT nID);

protected:
    CBitmap m_bitmap;

    DECLARE_MESSAGE_MAP()
public:
    afx_msg void OnPaint();
};

// SplashScreen.cpp: Implementierungsdatei
#include "stdafx.h"
#include "SplashScreen.h"

IMPLEMENT_DYNAMIC(CSplashScreen, CWnd)

CSplashScreen::CSplashScreen()
{
}

CSplashScreen::~CSplashScreen()
{
}

void CSplashScreen::Create(UINT nID)
{
    m_bitmap.LoadBitmap(nID);
    BITMAP bmInfo;
    m_bitmap.GetObject(sizeof(bmInfo), &bmInfo);

    int x = (::GetSystemMetrics(SM_CXSCREEN) - bmInfo.bmWidth) / 2;
    int y = (::GetSystemMetrics(SM_CYSCREEN) - bmInfo.bmHeight) / 2;

    CRect rect(x, y, x+bmInfo.bmWidth, y+bmInfo.bmHeight);

    CreateEx(0, AfxRegisterWndClass(0), L"", WS_POPUP|WS_VISIBLE|WS_BORDER, rect, NULL, 0);
}

BEGIN_MESSAGE_MAP(CSplashScreen, CWnd)
    ON_WM_PAINT()
END_MESSAGE_MAP()

void CSplashScreen::OnPaint()
{
    CPaintDC dc(this); // device context for painting

    CDC dcComp;
    dcComp.CreateCompatibleDC(&dc);
    dcComp.SelectObject(&m_bitmap);

    BITMAP bmInfo;
    m_bitmap.GetObject(sizeof(bmInfo), &bmInfo);
    dc.BitBlt(0, 0, bmInfo.bmWidth, bmInfo.bmHeight, &dcComp, 0, 0, SRCCOPY);
}