//**********************************************************************
// File name: app.cpp
//
// Implementation file for the CSimpleApp Class
//
// Functions:
//
// See app.h for a list of member functions.
//
// Copyright (c) 1992 - 1993 Microsoft Corporation. All rights reserved.
//**********************************************************************
#include "pre.h"
#include "iocs.h"
#include "ias.h"
#include "ioipf.h"
#include "ioips.h"
#include "app.h"
#include "site.h"
#include "doc.h"
#include <testmess.h>
extern void DeactivateIfActive(HWND hWnd);
#ifdef WIN32
extern BOOL CALLBACK About(HWND hDlg, UINT message, WPARAM wParam,
LPARAM lParam);
#endif
//**********************************************************************
//
// CSimpleApp::CSimpleApp()
//
// Purpose:
//
// Constructor for CSimpleApp
//
// Parameters:
//
// None
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
//
// TestDebugOut Windows API
// SetRectEmpty Windows API
//
// Comments:
//
// CSimpleApp has a contained COleInPlaceFrame. On construction
// of CSimpleApp, we explicitly call the constructor of this
// contained class and pass a copy of the this pointer, so that
// COleInPlaceFrame can refer back to this class
//
//********************************************************************
#pragma warning(disable : 4355) // turn off this warning. This warning
// tells us that we are passing this in
// an initializer, before "this" is through
// initializing. This is ok, because
// we just store the ptr in the other
// constructor
CSimpleApp::CSimpleApp() : m_OleInPlaceFrame(this)
#pragma warning (default : 4355) // Turn the warning back on
{
TestDebugOut(TEXT("In CSimpleApp's Constructor \r\n"));
// Set Ref Count
m_nCount = 0;
// clear members
m_hAppWnd = NULL;
m_hInst = NULL;
m_lpDoc = NULL;
// Make sure we don't think we are deactivating
m_fDeactivating = FALSE;
// We haven't got a unit test accelerator so ...
m_fGotUtestAccelerator = FALSE;
// clear flags
m_fInitialized = FALSE;
m_fCSHMode = FALSE;
m_fMenuMode = FALSE;
// used for inplace
SetRectEmpty(&nullRect);
}
//**********************************************************************
//
// CSimpleApp::~CSimpleApp()
//
// Purpose:
//
// Destructor for CSimpleApp Class.
//
// Parameters:
//
// None
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
//
// TestDebugOut Windows API
// DeleteObject Windows API
// OleUninitialize OLE API
//
//
//********************************************************************
CSimpleApp::~CSimpleApp()
{
TestDebugOut(TEXT("In CSimpleApp's Destructor\r\n"));
if (m_hStdPal)
DeleteObject(m_hStdPal);
// need to uninit the library...
if (m_fInitialized)
OleUninitialize();
}
//**********************************************************************
//
// CSimpleApp::DestroyDocs()
//
// Purpose:
//
// Destroys all of the open documents in the application (Only one
// since this is an SDI app, but could easily be modified to
// support MDI).
//
// Parameters:
//
// None
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
// CSimpDoc::Close DOC.CPP
//
//
//********************************************************************
void CSimpleApp::DestroyDocs()
{
m_lpDoc->Close(); // we have only 1 document
}
//**********************************************************************
//
// CSimpleApp::QueryInterface
//
// Purpose:
//
// Used for interface negotiation at the application level.
//
// Parameters:
//
// REFIID riid - A reference to the interface that is
// being queried.
//
// LPVOID FAR* ppvObj - An out parameter to return a pointer to
// the interface.
//
// Return Value:
//
// S_OK - The interface is supported.
// E_NOINTERFACE - The interface is not supported
//
// Function Calls:
// Function Location
//
// TestDebugOut Windows API
// IsEqualIID OLE API
// ResultFromScode OLE API
// COleInPlaceFrame::AddRef IOIPF.CPP
// CSimpleApp::AddRef APP.CPP
//
// Comments:
//
// Note that this QueryInterface is associated with the frame.
// Since the application could potentially have multiple documents
// and multiple objects, a lot of the interfaces are ambiguous.
// (ie. which IOleObject is returned?). For this reason, only
// pointers to interfaces associated with the frame are returned.
// In this implementation, Only IOleInPlaceFrame (or one of the
// interfaces it is derived from) can be returned.
//
//********************************************************************
STDMETHODIMP CSimpleApp::QueryInterface(REFIID riid, LPVOID FAR* ppvObj)
{
TestDebugOut(TEXT("In CSimpleApp::QueryInterface\r\n"));
*ppvObj = NULL; // must set out pointer parameters to NULL
// looking for IUnknown
if ( IsEqualIID(riid, IID_IUnknown))
{
AddRef();
*ppvObj = this;
return ResultFromScode(S_OK);
}
// looking for IOleWindow
if ( IsEqualIID(riid, IID_IOleWindow))
{
m_OleInPlaceFrame.AddRef();
*ppvObj=&m_OleInPlaceFrame;
return ResultFromScode(S_OK);
}
// looking for IOleInPlaceUIWindow
if ( IsEqualIID(riid, IID_IOleInPlaceUIWindow))
{
m_OleInPlaceFrame.AddRef();
*ppvObj=&m_OleInPlaceFrame;
return ResultFromScode(S_OK);
}
// looking for IOleInPlaceFrame
if ( IsEqualIID(riid, IID_IOleInPlaceFrame))
{
m_OleInPlaceFrame.AddRef();
*ppvObj=&m_OleInPlaceFrame;
return ResultFromScode(S_OK);
}
// Not a supported interface
return ResultFromScode(E_NOINTERFACE);
}
//**********************************************************************
//
// CSimpleApp::AddRef
//
// Purpose:
//
// Adds to the reference count at the Application level.
//
// Parameters:
//
// None
//
// Return Value:
//
// ULONG - The new reference count of the application.
//
// Function Calls:
// Function Location
//
// TestDebugOut Windows API
//
// Comments:
//
// Due to the reference counting model that is used in this
// implementation, this reference count is the sum of the
// reference counts on all interfaces of all objects open
// in the application.
//
//********************************************************************
STDMETHODIMP_(ULONG) CSimpleApp::AddRef()
{
TestDebugOut(TEXT("In CSimpleApp::AddRef\r\n"));
return ++m_nCount;
}
//**********************************************************************
//
// CSimpleApp::Release
//
// Purpose:
//
// Decrements the reference count at this level
//
// Parameters:
//
// None
//
// Return Value:
//
// ULONG - The new reference count of the application.
//
// Function Calls:
// Function Location
//
// TestDebugOut Windows API
//
//
//********************************************************************
STDMETHODIMP_(ULONG) CSimpleApp::Release()
{
TestDebugOut(TEXT("In CSimpleApp::Release\r\n"));
if (--m_nCount == 0)
{
delete this;
return 0;
}
return m_nCount;
}
//**********************************************************************
//
// CSimpleApp::fInitApplication
//
// Purpose:
//
// Initializes the application
//
// Parameters:
//
// HANDLE hInstance - Instance handle of the application.
//
// Return Value:
//
// TRUE - Application was successfully initialized.
// FALSE - Application could not be initialized
//
// Function Calls:
// Function Location
//
// LoadIcon Windows API
// LoadCursor Windows API
// GetStockObject Windows API
// RegisterClass Windows API
//
//
//********************************************************************
BOOL CSimpleApp::fInitApplication(HANDLE hInstance)
{
// Initialize our accelerator table
if ((m_hAccel = LoadAccelerators((HINSTANCE) hInstance,
TEXT("SimpcntrAccel"))) == NULL)
{
// Load failed so abort
TestDebugOut(TEXT("ERROR: Accelerator Table Load FAILED\r\n"));
return FALSE;
}
WNDCLASS wc;
// Fill in window class structure with parameters that describe the
// main window.
wc.style = NULL; // Class style(s).
wc.lpfnWndProc = MainWndProc; // Function to retrieve messages for
// windows of this class.
wc.cbClsExtra = 0; // No per-class extra data.
wc.cbWndExtra = 0; // No per-window extra data.
wc.hInstance = (HINSTANCE) hInstance; // Application that owns the
// class.
wc.hIcon = LoadIcon((HINSTANCE) hInstance, TEXT("SimpCntr"));
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = TEXT("SIMPLEMENU"); // Name of menu resource in
// .RC file.
wc.lpszClassName = TEXT("SimpCntrAppWClass"); // Name used in
// CreateWindow call
if (!RegisterClass(&wc))
return FALSE;
wc.style = CS_DBLCLKS; // Class style(s). allow DBLCLK's
wc.lpfnWndProc = DocWndProc; // Function to retrieve messages for
// windows of this class.
wc.cbClsExtra = 0; // No per-class extra data.
wc.cbWndExtra = 0; // No per-window extra data.
wc.hInstance = (HINSTANCE) hInstance; // Application that owns
// the class.
wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = TEXT("SimpCntrDocWClass"); // Name used in
// CreateWindow call.
// Register the window class and return success/failure code.
return (RegisterClass(&wc));
}
//**********************************************************************
//
// CSimpleApp::fInitInstance
//
// Purpose:
//
// Instance initialization.
//
// Parameters:
//
// HANDLE hInstance - App. Instance Handle.
//
// int nCmdShow - Show parameter from WinMain
//
// Return Value:
//
// TRUE - Initialization Successful
// FALSE - Initialization Failed.
//
//
// Function Calls:
// Function Location
//
// CreateWindow Windows API
// ShowWindow Windows API
// UpdateWindow Windows API
// OleBuildVersion OLE API
// OleInitialize OLE API
//
// Comments:
//
// Note that successful Initalization of the OLE libraries
// is remembered so the UnInit is only called if needed.
//
//********************************************************************
BOOL CSimpleApp::fInitInstance (HANDLE hInstance, int nCmdShow)
{
LPMALLOC lpMalloc = NULL;
#ifndef WIN32
/* Since OLE is part of the operating system in Win32, we don't need to
* check the version number in Win32.
*/
DWORD dwVer = OleBuildVersion();
// check to see if we are compatible with this version of the libraries
if (HIWORD(dwVer) != rmm || LOWORD(dwVer) < rup)
{
#ifdef _DEBUG
TestDebugOut(TEXT("WARNING:Incompatible OLE library version\r\n"));
#else
return FALSE;
#endif
}
#endif // WIN32
#if defined( _DEBUG )
/* OLE2NOTE: Use a special debug allocator to help track down
** memory leaks.
*/
OleStdCreateDbAlloc(0, &lpMalloc);
#endif
// We try passing in our own allocator first - if that fails we
// try without overriding the allocator.
if (SUCCEEDED(OleInitialize(lpMalloc)) ||
SUCCEEDED(OleInitialize(NULL)))
{
m_fInitialized = TRUE;
}
#if defined( _DEBUG )
/* OLE2NOTE: release the special debug allocator so that only OLE is
** holding on to it. later when OleUninitialize is called, then
** the debug allocator object will be destroyed. when the debug
** allocator object is destoyed, it will report (to the Output
** Debug Terminal) whether there are any memory leaks.
*/
if (lpMalloc) lpMalloc->Release();
#endif
m_hInst = (HINSTANCE) hInstance;
// Create the "application" windows
m_hAppWnd = CreateWindow (TEXT("SimpCntrAppWClass"),
TEXT("Simple OLE 2.0 In-Place Container"),
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
(HINSTANCE) hInstance,
NULL);
if (!m_hAppWnd)
return FALSE;
m_hStdPal = OleStdCreateStandardPalette();
ShowWindow (m_hAppWnd, nCmdShow);
UpdateWindow (m_hAppWnd);
// if we have been launched by the test driver, tell it our window handle
if( m_hDriverWnd )
{
PostMessage(m_hDriverWnd, WM_TESTREG, (WPARAM)m_hAppWnd, 0);
}
return m_fInitialized;
}
//**********************************************************************
//
// CSimpleApp::lCommandHandler
//
// Purpose:
//
// Handles the processing of WM_COMMAND.
//
// Parameters:
//
// HWND hWnd - Handle to the application Window
//
// UINT message - message (always WM_COMMAND)
//
// WPARAM wParam - Same as passed to the WndProc
//
// LPARAM lParam - Same as passed to the WndProc
//
// Return Value:
//
// NULL
//
// Function Calls:
// Function Location
//
// IOleInPlaceActiveObject::QueryInterface Object
// IOleInPlaceObject::ContextSensitiveHelp Object
// IOleInPlaceObject::Release Object
// IOleObject::DoVerb Object
// MessageBox Windows API
// DialogBox Windows API
// MakeProcInstance Windows API
// FreeProcInstance Windows API
// SendMessage Windows API
// DefWindowProc Windows API
// CSimpleDoc::InsertObject DOC.CPP
// CSimpleSite::GetObjRect SITE.CPP
// CSimpleApp::lCreateDoc APP.CPP
//
//
//********************************************************************
long CSimpleApp::lCommandHandler (HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
RECT rect;
// Win32 uses high word to tell were command came from so we dump it.
wParam = LOWORD(wParam);
// context sensitive help...
if (m_fMenuMode || m_fCSHMode)
{
if (m_fCSHMode)
{
// clear context sensitive help flag
m_fCSHMode = FALSE;
// if there is an InPlace active object, call its context
// sensitive help method with the FALSE parameter to bring the
// object out of the csh state. See the technotes for details.
if (m_lpDoc->m_lpActiveObject)
{
LPOLEINPLACEOBJECT lpInPlaceObject;
m_lpDoc->m_lpActiveObject->QueryInterface(
IID_IOleInPlaceObject,
(LPVOID FAR *)&lpInPlaceObject);
lpInPlaceObject->ContextSensitiveHelp(FALSE);
lpInPlaceObject->Release();
}
}
// see the technotes for details on implementing context sensitive
// help
if (m_fMenuMode)
{
m_fMenuMode = FALSE;
if (m_lpDoc->m_lpActiveObject)
m_lpDoc->m_lpActiveObject->ContextSensitiveHelp(FALSE);
}
// if we provided help, we would do it here...
MessageBox (hWnd, TEXT("Help"), TEXT("Help"), MB_OK);
return NULL;
}
// see if the command is a verb selections
if (wParam >= IDM_VERB0)
{
// get the rectangle of the object
m_lpDoc->m_lpSite->GetObjRect(&rect);
m_lpDoc->m_lpSite->m_lpOleObject->DoVerb(wParam - IDM_VERB0, NULL,
&m_lpDoc->m_lpSite->m_OleClientSite,
-1, m_lpDoc->m_hDocWnd, &rect);
}
else
{
switch (wParam)
{
// bring up the About box
case IDM_ABOUT:
{
#ifdef WIN32
DialogBox(m_hInst, // current instance
TEXT("AboutBox"), // resource to use
m_hAppWnd, // parent handle
About); // About() instance address
#else
FARPROC lpProcAbout = MakeProcInstance((FARPROC)About,
m_hInst);
DialogBox(m_hInst, // current instance
TEXT("AboutBox"), // resource to use
m_hAppWnd, // parent handle
lpProcAbout); // About() instance address
FreeProcInstance(lpProcAbout);
#endif
break;
}
// bring up the InsertObject Dialog
case IDM_INSERTOBJECT:
m_lpDoc->InsertObject();
break;
// exit the application
case IDM_EXIT:
SendMessage(hWnd, WM_SYSCOMMAND, SC_CLOSE, 0L);
break;
case IDM_NEW:
m_lpDoc->Close();
m_lpDoc = NULL;
lCreateDoc(hWnd, 0, 0, 0);
break;
case IDM_DEACTIVATE:
DeactivateIfActive(hWnd);
break;
case IDM_UTEST:
m_fGotUtestAccelerator = TRUE;
break;
default:
return (DefWindowProc(hWnd, message, wParam, lParam));
} // end of switch
} // end of else
return NULL;
}
//**********************************************************************
//
// CSimpleApp::lSizeHandler
//
// Purpose:
//
// Handles the WM_SIZE message
//
// Parameters:
//
// HWND hWnd - Handle to the application Window
//
// UINT message - message (always WM_SIZE)
//
// WPARAM wParam - Same as passed to the WndProc
//
// LPARAM lParam - Same as passed to the WndProc
//
// Return Value:
//
// LONG - returned from the "document" resizing
//
// Function Calls:
// Function Location
//
// GetClientRect Windows API
// CSimpleDoc::lResizeDoc DOC.CPP
//
//
//********************************************************************
long CSimpleApp::lSizeHandler (HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
RECT rect;
GetClientRect(m_hAppWnd, &rect);
return m_lpDoc->lResizeDoc(&rect);
}
//**********************************************************************
//
// CSimpleApp::lCreateDoc
//
// Purpose:
//
// Handles the creation of a document.
//
// Parameters:
//
// HWND hWnd - Handle to the application Window
//
// UINT message - message (always WM_CREATE)
//
// WPARAM wParam - Same as passed to the WndProc
//
// LPARAM lParam - Same as passed to the WndProc
//
// Return Value:
//
// NULL
//
// Function Calls:
// Function Location
//
// GetClientRect Windows API
// CSimpleDoc::CSimpleDoc DOC.CPP
//
//
//********************************************************************
long CSimpleApp::lCreateDoc (HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
RECT rect;
GetClientRect(hWnd, &rect);
m_lpDoc = CSimpleDoc::Create(this, &rect, hWnd);
return NULL;
}
//**********************************************************************
//
// CSimpleApp::AddFrameLevelUI
//
// Purpose:
//
// Used during InPlace negotiation.
//
// Parameters:
//
// None
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
//
// COleInPlaceFrame::SetMenu IOIPF.CPP
// CSimpleApp::AddFrameLevelTools APP.CPP
//
// Comments:
//
// Be sure to read the Technotes included in the OLE 2.0 toolkit
//
//********************************************************************
void CSimpleApp::AddFrameLevelUI()
{
m_OleInPlaceFrame.SetMenu(NULL, NULL, NULL);
AddFrameLevelTools();
}
//**********************************************************************
//
// CSimpleApp::AddFrameLevelTools
//
// Purpose:
//
// Used during InPlace negotiation.
//
// Parameters:
//
// None
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
//
// COleInPlaceFrame::SetBorderSpace IOIPF.CPP
// InvalidateRect Windows API
//
// Comments:
//
// Be sure to read the Technotes included in the OLE 2.0 toolkit
//
//********************************************************************
void CSimpleApp::AddFrameLevelTools()
{
m_OleInPlaceFrame.SetBorderSpace(&nullRect);
InvalidateRect(m_hAppWnd, NULL, TRUE);
}
//**********************************************************************
//
// CSimpleApp::HandleAccelerators
//
// Purpose:
//
// To properly handle accelerators in the Message Loop
//
// Parameters:
//
// LPMSG lpMsg - A pointer to the message structure.
//
// Return Value:
//
// TRUE - The accelerator was handled
// FALSE - The accelerator was not handled
//
// Function Calls:
// Function Location
//
// IOleInPlaceActiveObject::TranslateAccelerator Object
//
// Comments:
//
// If an object is InPlace active, it gets the first shot at
// handling the accelerators.
//
//********************************************************************
BOOL CSimpleApp::HandleAccelerators(LPMSG lpMsg)
{
HRESULT hResult;
BOOL retval = FALSE;
// The following is what you would do if this were an inproc DLL.
// A local server will be passing us commands to process
#if 0
// if we have an InPlace Active Object
if (m_lpDoc->m_lpActiveObject)
{
// Pass the accelerator on...
hResult = m_lpDoc->m_lpActiveObject->TranslateAccelerator(lpMsg);
if (hResult == NOERROR)
retval = TRUE;
}
#endif
// We process our accelerators
return TranslateAccelerator(m_hAppWnd, m_hAccel, lpMsg);
}
//**********************************************************************
//
// CSimpleApp::PaintApp
//
// Purpose:
//
// Handles the painting of the doc window.
//
//
// Parameters:
//
// HDC hDC - hDC to the Doc Window.
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
//
// CSimpleDoc::PaintDoc DOC.CPP
//
// Comments:
//
// This is an app level function in case we want to do palette
// management.
//
//********************************************************************
void CSimpleApp::PaintApp (HDC hDC)
{
// at this level, we could enumerate through all of the
// visible objects in the application, so that a palette
// that best fits all of the objects can be built.
// This app is designed to take on the same palette
// functionality that was provided in OLE 1.0, the palette
// of the last object drawn is realized. Since we only
// support one object at a time, it shouldn't be a big
// deal.
// if we supported multiple documents, we would enumerate
// through each of the open documents and call paint.
if (m_lpDoc)
m_lpDoc->PaintDoc(hDC);
}
//**********************************************************************
//
// CSimpleApp::ContextSensitiveHelp
//
// Purpose:
// Used in supporting context sensitive help at the app level.
//
//
// Parameters:
//
// BOOL fEnterMode - Entering/Exiting Context Sensitive
// help mode.
//
// Return Value:
//
// None
//
// Function Calls:
// Function Location
//
// IOleInPlaceActiveObject::QueryInterface Object
// IOleInPlaceObject::ContextSensitiveHelp Object
// IOleInPlaceObject::Release Object
//
// Comments:
//
// This function isn't used because we don't support Shift+F1
// context sensitive help. Be sure to look at the technotes
// in the OLE 2.0 toolkit.
//
//********************************************************************
void CSimpleApp::ContextSensitiveHelp (BOOL fEnterMode)
{
if (m_fCSHMode != fEnterMode)
{
m_fCSHMode = fEnterMode;
// this code "trickles" the context sensitive help via shift+f1
// to the inplace active object. See the technotes for implementation
// details.
if (m_lpDoc->m_lpActiveObject)
{
LPOLEINPLACEOBJECT lpInPlaceObject;
m_lpDoc->m_lpActiveObject->QueryInterface(IID_IOleInPlaceObject,
(LPVOID FAR *)&lpInPlaceObject);
lpInPlaceObject->ContextSensitiveHelp(fEnterMode);
lpInPlaceObject->Release();
}
}
}
/* OLE2NOTE: forward the WM_QUERYNEWPALETTE message (via
** SendMessage) to UIActive in-place object if there is one.
** this gives the UIActive object the opportunity to select
** and realize its color palette as the FOREGROUND palette.
** this is optional for in-place containers. if a container
** prefers to force its color palette as the foreground
** palette then it should NOT forward the this message. or
** the container can give the UIActive object priority; if
** the UIActive object returns 0 from the WM_QUERYNEWPALETTE
** message (ie. it did not realize its own palette), then
** the container can realize its palette.
** (see ContainerDoc_ForwardPaletteChangedMsg for more info)
**
** (It is a good idea for containers to use the standard
** palette even if they do not use colors themselves. this
** will allow embedded object to get a good distribution of
** colors when they are being drawn by the container)
**
*/
//**********************************************************************
//
// CSimpleApp::QueryNewPalette
//
// Purpose:
// See above
//
//
// Parameters:
//
// None
//
// Return Value:
//
// 0 if the handle to palette (m_hStdPal) is NULL,
// 1 otherwise
//
// Function Calls:
// Function Location
//
// SendMessage Windows API
//
//
//********************************************************************
LRESULT CSimpleApp::QueryNewPalette(void)
{
if (m_hwndUIActiveObj)
{
if (SendMessage(m_hwndUIActiveObj, WM_QUERYNEWPALETTE,
(WPARAM)0, (LPARAM)0))
{
/* Object selected its palette as foreground palette */
return (LRESULT)1;
}
}
return wSelectPalette(m_hAppWnd, m_hStdPal, FALSE/*fBackground*/);
}
/* This is just a helper routine */
LRESULT wSelectPalette(HWND hWnd, HPALETTE hPal, BOOL fBackground)
{
HDC hdc;
HPALETTE hOldPal;
UINT iPalChg = 0;
if (hPal == 0)
return (LRESULT)0;
hdc = GetDC(hWnd);
hOldPal = SelectPalette(hdc, hPal, fBackground);
iPalChg = RealizePalette(hdc);
SelectPalette(hdc, hOldPal, TRUE /*fBackground*/);
ReleaseDC(hWnd, hdc);
if (iPalChg > 0)
InvalidateRect(hWnd, NULL, TRUE);
return (LRESULT)1;
}
