Leaked source code of windows server 2003
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// Copyright (c) 1999 Microsoft Corporation. All Rights Reserved.
#include <stdafx.h>
#include <windows.h>
#include "msgwindow.h"
extern CComModule _Module;
// limit to this file
//
static const TCHAR szClassName[] = TEXT("CMSWEBDVDMsgWindowClass");
static const TCHAR szDefaultWindowName[] = TEXT("CMSWEBDVDMsgWindowClassName");
//
// CMessageWindow class implementation
// Generic goo to create a dummy window to handle events
//
static LRESULT CALLBACK StaticMsgWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
CMsgWindow* win = (CMsgWindow*) GetWindowLongPtr( hWnd, GWLP_USERDATA );
if( !win ) {
if( uMsg == WM_CREATE) {
// on WM_CREATE messages the last parameter to CreateWindow() is returned in the lparam
CREATESTRUCT* pCreate = (CREATESTRUCT *)lParam;
win = (CMsgWindow*) pCreate->lpCreateParams;
SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)win);
win->SetHandle(hWnd);
} else {
return DefWindowProc( hWnd, uMsg, wParam, lParam);
}
}
return win->WndProc( uMsg, wParam, lParam );
}
CMsgWindow::CMsgWindow()
: m_hWnd( NULL )
{
WNDCLASS wc; // class data
if (!GetClassInfo(_Module.GetModuleInstance(), szClassName, &wc))
{
//
// Register message window class
//
ZeroMemory(&wc, sizeof(wc)) ;
wc.lpfnWndProc = StaticMsgWndProc ;
wc.hInstance = _Module.GetModuleInstance() ;
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
wc.lpszClassName = szClassName;
wc.cbWndExtra = sizeof( LONG_PTR );
if (0 == RegisterClass(&wc) ) // Oops, just leave; we'll catch later...
{
}
}
}
bool CMsgWindow::Open( LPCTSTR pWindowName )
{
if( m_hWnd ) {
DestroyWindow( m_hWnd );
}
if (NULL == pWindowName) {
pWindowName = szDefaultWindowName;
}
//
// m_hWnd is assigned during WM_CREATE message processing
//
HWND hwnd =
CreateWindowEx(WS_EX_TOOLWINDOW, szClassName, pWindowName,
WS_ICONIC, 0, 0, 1, 1, NULL, NULL,
GetModuleHandle(NULL),
this );
return (NULL != hwnd);
}
bool CMsgWindow::Close(){
if(m_hWnd){
DestroyWindow(m_hWnd);
//SetWindowLongPtr(m_hWnd, GWLP_USERDATA, (LONG_PTR)0);
//PostMessage(m_hWnd, WM_CLOSE, 0, 0);
//m_hWnd = NULL;
}/* end of if statement */
return(true);
}/* end of function Close */
CMsgWindow::~CMsgWindow()
{
SetWindowLongPtr(m_hWnd, GWLP_USERDATA, (LONG_PTR)0);
PostMessage(m_hWnd, WM_CLOSE, 0, 0);
}
LRESULT CMsgWindow::WndProc( UINT uMsg, WPARAM wParam, LPARAM lParam )
{
return DefWindowProc(m_hWnd, uMsg, wParam, lParam);
}