DLG.CPP

//******************************************************************************************* 
// 
// Filename : Dlg.cpp 
// 
//Implementation file for CDlg, CFileDlg and CPropPage 
// 
// Copyright 1994 - 1998 Microsoft Corporation. All rights reserved 
// 
//******************************************************************************************* 
 
#include "Pch.H" 
 
#include "ThisDll.H" 
 
#include "Dlg.H" 
 
BOOL CDlg::RealDlgProc(UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
return(FALSE); 
} 
 
 
BOOL CALLBACK CDlg::DlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
CDlg *pThis = (CDlg *)GetWindowLong(hDlg, DWL_USER); 
 
if (uMsg == WM_INITDIALOG) 
{ 
pThis = (CDlg *)lParam; 
pThis->m_hDlg = hDlg; 
SetWindowLong(hDlg, DWL_USER, lParam); 
} 
else if (!pThis) 
{ 
return(FALSE); 
} 
 
return(pThis->RealDlgProc(uMsg, wParam, lParam)); 
} 
 
 
int CDlg::DoModal(UINT idRes, HWND hParent) 
{ 
return(DialogBoxParam(g_ThisDll.GetInstance(), MAKEINTRESOURCE(idRes), hParent, 
DlgProc, (LPARAM)this)); 
} 
 
 
HWND CDlg::DoModeless(UINT idRes, HWND hParent) 
{ 
return(CreateDialogParam(g_ThisDll.GetInstance(), MAKEINTRESOURCE(idRes), hParent, 
DlgProc, (LPARAM)this)); 
} 
 
 
CFileDlg::CFileDlg(HWND hwndParent, LPCSTR szFilter, LPSTR szFile, UINT uFileLen, 
LPCSTR szTitle) 
: m_dwError(0) 
{ 
memset((LPOPENFILENAME)this, 0, sizeof(OPENFILENAME)); 
 
lStructSize = sizeof(OPENFILENAME); 
hwndOwner = hwndParent; 
hInstance = g_ThisDll.GetInstance(); 
lpstrFilter = szFilter; 
lpstrFile = szFile; 
nMaxFile = uFileLen; 
lpstrTitle = szTitle; 
} 
 
 
BOOL CFileDlg::RealHookProc(UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
return(FALSE); 
} 
 
 
BOOL CFileDlg::HookProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
CFileDlg *pThis = (CFileDlg *)GetWindowLong(hDlg, DWL_USER); 
 
if (uMsg == WM_INITDIALOG) 
{ 
LPOPENFILENAME pofn = (LPOPENFILENAME)lParam; 
 
pThis = (CFileDlg *)pofn->lCustData; 
pThis->m_hDlg = hDlg; 
SetWindowLong(hDlg, DWL_USER, pofn->lCustData); 
} 
else if (!pThis) 
{ 
return(FALSE); 
} 
 
return(pThis->RealHookProc(uMsg, wParam, lParam)); 
} 
 
 
BOOL CFileOpenDlg::DoModal() 
{ 
// Caller needs to set OFN_ENABLEHOOK to get a hook 
lpfnHook = (LPOFNHOOKPROC)HookProc; 
lCustData = (LONG)this; 
 
BOOL bRet = GetOpenFileName(this); 
m_dwError = bRet ? 0 : CommDlgExtendedError(); 
 
return(bRet); 
} 
 
 
CPropPage::~CPropPage() 
{ 
} 
 
 
CPropPage::CPropPage(LPCSTR szTmplt) 
{ 
dwSize = sizeof(CPropPage); 
dwFlags = PSP_DEFAULT; 
hInstance = g_ThisDll.GetInstance(); 
pszTemplate = szTmplt; 
pfnDlgProc = PageProc; 
m_pThis = this; 
} 
 
 
HRESULT CPropPage::DoModeless(LPFNADDPROPSHEETPAGE lpfnAddPage, LPARAM lParam) 
{ 
dwFlags |= PSP_USECALLBACK; 
pfnCallback = PageRelease; 
 
    // add the page; note this whole object has been copied to the page structure 
    HPROPSHEETPAGE hPage = CreatePropertySheetPage(this); 
if (!hPage) 
{ 
return(E_OUTOFMEMORY); 
} 
 
if (!lpfnAddPage(hPage, lParam)) 
{ 
return(E_UNEXPECTED); 
} 
 
    return(NOERROR); 
 
} 
 
 
BOOL CALLBACK CPropPage::PageProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
CPropPage *pThis = (CPropPage *)GetWindowLong(hDlg, DWL_USER); 
 
if (uMsg == WM_INITDIALOG) 
{ 
CPropPage *pThat = IToClass(CPropPage, dwSize, lParam); 
pThis = pThat->m_pThis; 
 
pThis->m_hPage = hDlg; 
SetWindowLong(hDlg, DWL_USER, (LONG)pThis); 
} 
else if (!pThis) 
{ 
return(FALSE); 
} 
 
return(pThis->RealPageProc(uMsg, wParam, lParam)); 
} 
 
 
UINT CALLBACK CPropPage::PageRelease(HWND hwnd, UINT uMsg, LPPROPSHEETPAGE ppsp) 
{ 
if (uMsg == PSPCB_RELEASE) 
{ 
CPropPage *pThat = IToClass(CPropPage, dwSize, ppsp); 
CPropPage *pThis = pThat->m_pThis; 
 
delete pThis; 
} 
 
return(TRUE); 
} 
 
 
BOOL CPropPage::RealPageProc(UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
return(FALSE); 
}