C / C++ / MFC

Radhakrishnan G. wrote:

May be useful

Radhakrishnan G. wrote:

pDisplaySettingsPage->OnChangeColor();

INT_PTR CALLBACK DisplaySettingsPage::DisplaySettingsPageDlgProc( HWND hWnd_i,
                                                                  UINT uMessage_i,
                				                  WPARAM wParam_i,
                                                                  LPARAM lParam_i )
{
    // Get user data from the window.
    DisplaySettingsPage* pDisplaySettingsPage = reinterpret_cast<displaysettingspage*>( GetWindowLong( hWnd_i, GWL_USERDATA ));
    switch (uMessage_i)
    {
    case WM_INITDIALOG:
		{
			pDisplaySettingsPage = reinterpret_cast<displaysettingspage*>( lParam_i );
			if( 0 != pDisplaySettingsPage )
			{
                                // Set user data
				SetWindowLong( hWnd_i, GWL_USERDATA, lParam_i );
				pDisplaySettingsPage->m_hWnd = hWnd_i;
				pDisplaySettingsPage->OnInitDialog();
			}
			return TRUE;
		}
        break;
	case WM_CTLCOLORSTATIC:
		{
			if( IDC_STATIC_BKCOLOR == GetDlgCtrlID( (HWND)lParam_i ))
			{
				RECT stRect;
				GetClientRect( (HWND)lParam_i, &stRect );
				FillRect( (HDC)wParam_i, &stRect, pDisplaySettingsPage->m_hBkBrush);
				return (BOOL)GetStockObject(NULL_BRUSH);
			}
		}
		break;
	case WM_NOTIFY:
		{
			NMHDR* pstNMHDR = reinterpret_cast< NMHDR*>( lParam_i );
			if( PSN_APPLY == pstNMHDR->code )
			{
			}
		}
		break;
	case WM_COMMAND:
		{
			int nCtrlCode = LOWORD( wParam_i );
			if( IDC_BTN_CHANGE_COLORS == nCtrlCode )
			{
				pDisplaySettingsPage->OnChangeColor();
			}
		}
		break;
    }
    return DefWindowProc( hWnd_i, uMessage_i, wParam_i, lParam_i );
}

class DisplaySettingsPage  
{
public:
	DisplaySettingsPage();
	~DisplaySettingsPage();
	
        operator LPPROPSHEETPAGE();

        static INT_PTR CALLBACK DisplaySettingsPageDlgProc( HWND hWnd_i, UINT uMessage_i,
		                                            WPARAM wParam_i, LPARAM lParam_i );
	
	void OnInitDialog();
	void OnChangeColor();
	
private:
	
    HWND          m_hWnd; // Handle to the Property page
    HBRUSH        m_hBkBrush;
    PROPSHEETPAGE m_stPropertyPage; // Property page information.

};

DisplaySettingsPage::DisplaySettingsPage() : m_hWnd( 0 ),
											 m_hBkBrush( 0 )
{
    ZeroMemory( &m_stPropertyPage, sizeof( PROPSHEETPAGE ));
    m_stPropertyPage.dwSize     = sizeof( PROPSHEETPAGE );
    m_stPropertyPage.dwFlags    = PSP_DEFAULT;
    m_stPropertyPage.pszTemplate = MAKEINTRESOURCE( IDD_DISPLAY_SETTINGS_PAGE );
    m_stPropertyPage.lParam     = reinterpret_cast<lparam>( this );
    m_stPropertyPage.hInstance  = GetModuleHandle( 0 );
    m_stPropertyPage.pfnDlgProc = DisplaySettingsPageDlgProc;
}</lparam>

Radhakrishnan G. wrote:

DisplaySettingsPage* pDisplaySettingsPage = reinterpret_cast<displaysettingspage*>( GetWindowLong( hWnd_i, GWL_USERDATA ));

Radhakrishnan G. wrote:

Crash occured while displaying Color Chooser Dialog form a Property Sheet

CHOOSECOLOR* pstChooseColor = new CHOOSECOLOR;
COLORREF     crCustomColorArray[ 16 ];
ZeroMemory( pstChooseColor, sizeof( CHOOSECOLOR ));
pstChooseColor->Flags        = CC_RGBINIT;
pstChooseColor->lStructSize  = sizeof( CHOOSECOLOR );
pstChooseColor->hwndOwner    = m_hWnd;
pstChooseColor->lpCustColors = crCustomColorArray;  // Custom color array
pstChooseColor->rgbResult    = ConfigMgr::Instance().GetBkColor();
if( FALSE != ChooseColor( pstChooseColor ))
{
    // Update the Background color.
    ConfigMgr::Instance().SetBkColor( *pstChooseColor->lpCustColors );
}
delete pstChooseColor;
pstChooseColor = 0;

CHOOSECOLOR stChooseColor = { 0 };
COLORREF     crCustomColorArray[ 16 ] = { 0 };
stChooseColor.Flags       = CC_RGBINIT;
stChooseColor.lStructSize = sizeof( CHOOSECOLOR );
stChooseColor.hwndOwner   = m_hWnd;
stChooseColor.lpCustColors = crCustomColorArray;  // Custom color array stChooseColor.rgbResult   = ConfigMgr::Instance().GetBkColor();
if( FALSE != ChooseColor( &stChooseColor ))
{
  // Update the Background color.
  ConfigMgr::Instance().SetBkColor( *stChooseColor.lpCustColors );
}

Naveen wrote:

The mail from Chris was a surprise to me. I had no clue.