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Improve Zooming with Enhanced Mouse Wheels

, 19 Oct 2011 CPOL
How to give your users a better zooming experience with High Resolution Mouse Wheels.
// HiResScrollWheel.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "HiResScrollWheel.h"
#include "HiResScrollWheelDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CHiResScrollWheelApp

BEGIN_MESSAGE_MAP(CHiResScrollWheelApp, CWinApp)
	ON_COMMAND(ID_HELP, &CWinApp::OnHelp)
END_MESSAGE_MAP()


// CHiResScrollWheelApp construction

CHiResScrollWheelApp::CHiResScrollWheelApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}


// The one and only CHiResScrollWheelApp object

CHiResScrollWheelApp theApp;


// CHiResScrollWheelApp initialization

BOOL CHiResScrollWheelApp::InitInstance()
{
	// InitCommonControlsEx() is required on Windows XP if an application
	// manifest specifies use of ComCtl32.dll version 6 or later to enable
	// visual styles.  Otherwise, any window creation will fail.
	INITCOMMONCONTROLSEX InitCtrls;
	InitCtrls.dwSize = sizeof(InitCtrls);
	// Set this to include all the common control classes you want to use
	// in your application.
	InitCtrls.dwICC = ICC_WIN95_CLASSES;
	InitCommonControlsEx(&InitCtrls);

	CWinApp::InitInstance();

	AfxEnableControlContainer();

	SetRegistryKey(_T("HiResScrollWheel -- Code Project"));

	CHiResScrollWheelDlg dlg;
	m_pMainWnd = &dlg;
	INT_PTR nResponse = dlg.DoModal();
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Stephen H Davis
Software Developer (Senior) Logitech Corporation
United States United States
Stephen lives in Fremont, CA with his wife and daughter and has programmed in C and C++ for a very long time.

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