splashscr.cpp

Windows CE .Net 下面 VOIP编程的经典实例。对于初学Windows 平台下VOIP编程技术的程序员颇具借鉴意义！

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
// Splashscr.cpp: show the splash screen, kill the splash screen
//

#include "stdafx.h"
#include "splashscr.h"
#include "rtcs.h"

#define MAX_LOADSTRING 100

CSplashScreen::CSplashScreen( HINSTANCE hInstance, WORD wBmpID )
{
	DEBUGMSG( ZONE_STATUS|ZONE_INIT, ( L"VoipDemo: +CSplashScreen::CSplashScreen() this=0x%08x, ...\r\n", this ) );

	hWndSplashScreen = NULL;
	hInst = hInstance;
	wBmpResID = wBmpID;

	WNDCLASS	wc;

    wc.style			= CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc		= (WNDPROC) CSplashScreen::SplashWndProc;
    wc.cbClsExtra		= 0;
    wc.cbWndExtra		= 0;
    wc.hInstance		= hInstance;
    wc.hIcon			= LoadIcon( hInstance, MAKEINTRESOURCE( IDI_VOIPDEMO ) );
    wc.hCursor			= 0;
    wc.hbrBackground	= ( HBRUSH ) GetStockObject( WHITE_BRUSH );

    wc.lpszMenuName		= 0;
    wc.lpszClassName	= L"VOIPSPLASH";

	if ( !RegisterClass( &wc ) )
		if ( GetLastError() != ERROR_CLASS_ALREADY_EXISTS )
			return;

	TCHAR	szTitle[ MAX_LOADSTRING ];			// The title bar text

	LoadString( hInst, wBmpResID, szTitle, MAX_LOADSTRING );
	hWndSplashScreen = CreateWindow( L"VOIPSPLASH", szTitle, WS_POPUP, 10, 40, 10, 10, NULL, NULL, hInst, NULL );
	SetWindowLong( hWndSplashScreen, GWL_USERDATA, ( DWORD )this );

	// Put in on the middle of the screen
	int nSSCx = 300;
	int nSSCy = 200;
	int nScreenWidth  = GetSystemMetrics( SM_CXFULLSCREEN );
	int nScreenHeight = GetSystemMetrics( SM_CYFULLSCREEN );
	int NewPosX = ( nScreenWidth - nSSCx ) / 2;
	int NewPosY = ( nScreenHeight - nSSCy ) / 2;
				
	// if the box is larger than the physical screen 
	if ( NewPosX < 0 )
		NewPosX = 0;
	if ( NewPosY < 0 )
		NewPosY = 0;
				
	SetWindowPos( hWndSplashScreen, 0, NewPosX, NewPosY, nSSCx, nSSCy, SWP_NOZORDER );
	ShowWindow( hWndSplashScreen, SW_HIDE );
	UpdateWindow( hWndSplashScreen );


	DEBUGMSG( ZONE_STATUS|ZONE_INIT, ( L"VoipDemo: -CSplashScreen::CSplashScreen()...\r\n" ) );
}


CSplashScreen::~CSplashScreen()
{
	DEBUGMSG( ZONE_STATUS|ZONE_INIT, ( L"VoipDemo: +CSplashScreen::~CSplashScreen()...\r\n" ) );

	// Check if window has been destroyed yet
	if ( hWndSplashScreen )
		DestroyWindow( hWndSplashScreen );

	hWndSplashScreen = NULL;

	DEBUGMSG( ZONE_STATUS|ZONE_INIT, ( L"VoipDemo: -CSplashScreen::~CSplashScreen()...\r\n" ) );
}


CSplashScreen::Show( BOOL bShow )
{
	DEBUGMSG( ZONE_STATUS|ZONE_INIT, ( L"VoipDemo: +CSplashScreen::Show()...\r\n" ) );

	ShowWindow( hWndSplashScreen, ( bShow )?SW_SHOWNORMAL:SW_HIDE );
	UpdateWindow( hWndSplashScreen );

	DEBUGMSG( ZONE_STATUS|ZONE_INIT, ( L"VoipDemo: -CSplashScreen::Show()...\r\n" ) );
}


LRESULT CALLBACK CSplashScreen::SplashWndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
{
	CSplashScreen* pThis = ( CSplashScreen* )GetWindowLong( hWnd, GWL_USERDATA );

	switch ( message ) 
	{
		case WM_CREATE:
			break;

		case WM_PAINT:
			return pThis->DoSplashPaint( wParam, lParam );
			
//		case WM_DESTROY:
//			PostQuitMessage( 0 );
			break;

		default:
			return DefWindowProc( hWnd, message, wParam, lParam );
   }
   return 0;
}



LRESULT CSplashScreen::DoSplashPaint( WPARAM wParam, LPARAM lParam )
{
	RECT rt;
	PAINTSTRUCT ps;

	HDC hdc = BeginPaint( hWndSplashScreen, &ps );
	GetClientRect( hWndSplashScreen, &rt );

	// Draw the splash image
	HBITMAP hSplash = LoadBitmap( hInst, MAKEINTRESOURCE( wBmpResID ) );

	HDC hBmpDC = CreateCompatibleDC( hdc );
	HBITMAP hOldBmp = ( HBITMAP )SelectObject( hBmpDC, hSplash );

	BITMAP sSplash;
	memset( &sSplash, 0, sizeof( BITMAP ) );
	GetObject( hSplash, sizeof( BITMAP ), &sSplash );

	BitBlt( hdc, 0, 0, sSplash.bmWidth, sSplash.bmHeight, hBmpDC, 0, 0, SRCCOPY );

	SelectObject( hBmpDC, hOldBmp );

	DeleteDC( hBmpDC );
	DeleteObject( hSplash );

	EndPaint( hWndSplashScreen, &ps );

	return 0;
}