mdichild.c

ICon文件格式

                    }
                }
                break; // End WM_COMMAND -> ID_EDIT_COPY

                // The filename has changed, update the window title
                case ID_UPDATETITLE:
                {
                    TCHAR	szFileTitle[MAX_PATH];
                    LPCHILDWINDOWDATA	lpcwd;

                    // Get the data associated this window 
                    lpcwd = (LPCHILDWINDOWDATA)GetWindowLong( hWnd, GWL_USERDATA );
                    // If we have some data
                    if( lpcwd != NULL )
                    {
                        // including an icon resource
                        if( lpcwd->lpIR != NULL )
                        {
                            // The calculate and set the new title
                            if( GetFileTitle( lpcwd->lpIR->szOriginalICOFileName, szFileTitle, MAX_PATH ) == 0 )
                            {
                                SetWindowText( hWnd, szFileTitle );
                            }
                        }
                    }
                }
                break; // End WM_COMMAND -> ID_UPDATETITLE

                // How many image formats in the icon resource? (return that number)
                case ID_GETNUMFORMATS:
                {
                    LPCHILDWINDOWDATA	lpcwd;
                    UINT nNum = 0;

                    // Get the data associated this window 
                    lpcwd = (LPCHILDWINDOWDATA)GetWindowLong( hWnd, GWL_USERDATA );
                    // If we have some data
                    if( lpcwd != NULL )
                    {
                        // If we have a listbox, get its count, else 0
                        if( lpcwd->hWndFormatListBox != NULL )
                            nNum = (UINT)SendMessage( lpcwd->hWndFormatListBox, CB_GETCOUNT, 0, 0 );
                        else
                            nNum = 0;
                        // If an error occurred, default to 0
                        if( nNum == (UINT)CB_ERR )
                            nNum = 0;
                    }
                    // Send it back
                    return nNum;
                }
                break; // End WM_COMMAND -> ID_GETNUMFORMATS

                // Has this icon resource changed? return TRUE=yes, FALSE=no
                case ID_HASFILECHANGED:
                {
                    LPCHILDWINDOWDATA	lpcwd;
                    UINT nRet = 0;

                    // Get the data associated this window 
                    lpcwd = (LPCHILDWINDOWDATA)GetWindowLong( hWnd, GWL_USERDATA );
                    // If we have some data
                    if( lpcwd != NULL )
                        // And it includes an icon resource
                        if( lpcwd->lpIR != NULL )
                            // then check whether it has changed
                            return lpcwd->lpIR->bHasChanged == TRUE;
                    // Otherwise, return FALSE
                    return nRet;
                }
                break; // End WM_COMMAND -> ID_HASFILECHANGED

                // Handle selection changes, etc from listbox
                case ID_FORMAT_BOX:
                    switch( HIWORD(wParam) )
                    {
                        // If a selection is made, or changes, repaint
                        case CBN_SELCHANGE:
                        case CBN_SELENDOK:
                            InvalidateRect( hWnd, NULL, TRUE );
                        break;
                    }
                break; // End WM_COMMAND -> ID_FORMAT_BOX
            
                // User wants to save the ICO file
                case ID_FILE_SAVEAS:
                case ID_FILE_SAVE:
                {
                    TCHAR	szFileName[MAX_PATH];
                    LPCHILDWINDOWDATA	lpcwd;

                    // Get the data associated this window 
                    if( ( lpcwd = (LPCHILDWINDOWDATA)GetWindowLong( hWnd, GWL_USERDATA ) ) != NULL )
                    {
                        // See if it includes an icon resource
                        if( lpcwd->lpIR != NULL )
                        {
                            HCURSOR	hOldCursor;

                            // This might take a while :(
                            hOldCursor = SetCursor( LoadCursor(NULL,IDC_WAIT) );

                            // If we have an original filename, and user did *NOT* 'Save As'
                            if( ( lstrlen(lpcwd->lpIR->szOriginalICOFileName) > 0 ) && (LOWORD(wParam)!=ID_FILE_SAVEAS) )
                            {
                                // The just write it out
                                WriteIconToICOFile( lpcwd->lpIR, lpcwd->lpIR->szOriginalICOFileName );
                                // which, of course, brings it up to date
                                lpcwd->lpIR->bHasChanged = FALSE;
                            }
                            else
                            {
                                // Either we have no name, or user hit 'Save As'
                                if( GetSaveIconFileName( szFileName, IDS_FILTERSTRING, LOWORD(wParam)==ID_FILE_SAVE?"Save Icon File":"Save Icon File As" ) )
                                {
                                    // So, write it out
                                    WriteIconToICOFile( lpcwd->lpIR, szFileName );
                                    // Update the name associated with the resource
                                    lstrcpy( lpcwd->lpIR->szOriginalICOFileName, szFileName );
                                    // Inform window to update title
                                    SendMessage( hWnd, WM_COMMAND, ID_UPDATETITLE, 0 );
                                    // and, of course, it is now up to date
                                    lpcwd->lpIR->bHasChanged = FALSE;
                                }
                            }
                            SetCursor( hOldCursor );
                        }
                        else
                            MessageBox( hWnd, "Error Getting Icon Info - File Not Saved", "Error", MB_OK );
                    }
                }
                break; // End WM_COMMAND -> ID_FILE_SAVE/ID_FILE_SAVEAS
            }
        break; // End WM_COMMAND
    }
    return DefMDIChildProc( hWnd, Msg, wParam, lParam );
}
/* End IconChildWndProc() **************************************************/




/****************************************************************************
*
*     FUNCTION: Draw3DRect
*
*     PURPOSE:  draws a rectangle in 3d colors
*
*     PARAMS:   HDC hDC      - The DC on which to draw
*               RECT Rect    - The rectangle itself
*               BOOL bSunken - TRUE  = rect should look sunken
*                              FALSE = rect should look raised
*
*     RETURNS:  BOOL - TRUE for success, FALSE for failure
*
* History:
*                July '95 - Created
*
\****************************************************************************/
BOOL Draw3DRect( HDC hDC, RECT Rect, BOOL bSunken )
{
    HBRUSH	hBrush;
    HPEN    hPen, hOldPen;

    // Get the color for the main foreground
    hBrush = CreateSolidBrush( GetSysColor(COLOR_3DFACE) );
    // paint it
    FillRect( hDC, &Rect, hBrush );
    DeleteObject( hBrush );
    // Get the pen for the top and left sides
    if( bSunken )
        hPen = CreatePen( PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW) );
    else
        hPen = CreatePen( PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT) );
    hOldPen = SelectObject( hDC, hPen);
    // Draw the top and left sides
    MoveToEx( hDC, Rect.right, Rect.top, NULL );
    LineTo( hDC, Rect.left, Rect.top );
    LineTo( hDC, Rect.left, Rect.bottom );
    SelectObject( hDC, hOldPen);
    DeleteObject( hPen );
    // Get the pen for the bottom and right sides
    if( bSunken )
        hPen = CreatePen( PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT) );
    else
        hPen = CreatePen( PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW) );
    hOldPen = SelectObject( hDC, hPen);
    // Draw the bottom and right sides
    LineTo( hDC, Rect.right, Rect.bottom );
    LineTo( hDC, Rect.right, Rect.top );
    SelectObject( hDC, hOldPen);
    DeleteObject( hPen );
    return TRUE;
}
/* End Draw3DRect() *******************************************************/




/****************************************************************************
*
*     FUNCTION: EraseBackground
*
*     PURPOSE:  Draws the background for the MDI child
*
*     PARAMS:   HWND hWnd - The MDI window of interest
*               HDC  hDC  - The DC on which to draw
*
*     RETURNS:  void
*
* History:
*                July '95 - Created
*
\****************************************************************************/
void EraseBackground( HWND hWnd, HDC hDC )
{
    RECT                Rect;
    LPCHILDWINDOWDATA	lpcwd;
    HBRUSH            	hBrush;
    SIZE                TextSize;

    // Just how big is this window?
    GetClientRect( hWnd, &Rect );
    // Paint the background
    Draw3DRect( hDC, Rect, FALSE );

    // If there is no icon resource yet, bail out
    if( ( lpcwd = (LPCHILDWINDOWDATA)GetWindowLong( hWnd, GWL_USERDATA ) ) == NULL )
        return;
    // Draw 3d rectangles around areas of interest
    Draw3DRect( hDC, lpcwd->WhiteRect, TRUE );
    Draw3DRect( hDC, lpcwd->WhiteTextRect, TRUE );
    Draw3DRect( hDC, lpcwd->BlackRect, TRUE );
    Draw3DRect( hDC, lpcwd->BlackTextRect, TRUE );
    Draw3DRect( hDC, lpcwd->XORRect, TRUE );
    Draw3DRect( hDC, lpcwd->XORTextRect, TRUE );
    Draw3DRect( hDC, lpcwd->ANDRect, TRUE );
    Draw3DRect( hDC, lpcwd->ANDTextRect, TRUE );
    // Fill in the white area
    hBrush = GetStockObject( WHITE_BRUSH );
    SelectObject( hDC, hBrush );
    Rectangle( hDC, lpcwd->WhiteRect.left, lpcwd->WhiteRect.top, lpcwd->WhiteRect.right, lpcwd->WhiteRect.bottom );
    // Fill in the black area
    hBrush = GetStockObject( BLACK_BRUSH );
    SelectObject( hDC, hBrush );
    Rectangle( hDC, lpcwd->BlackRect.left, lpcwd->BlackRect.top, lpcwd->BlackRect.right, lpcwd->BlackRect.bottom );

    // Set texts for the various sections
    SetBkMode( hDC, TRANSPARENT );
    GetTextExtentPoint32( hDC, "Icon On Black", 13, &TextSize );
    TextOut( hDC, lpcwd->BlackTextRect.left + ((RectWidth(lpcwd->BlackTextRect)-TextSize.cx)/2),
                    lpcwd->BlackTextRect.top + ((RectHeight(lpcwd->BlackTextRect)-TextSize.cy)/2), "Icon On Black", 13 );
    GetTextExtentPoint32( hDC, "Icon On White", 13, &TextSize );
    TextOut( hDC, lpcwd->WhiteTextRect.left + ((RectWidth(lpcwd->WhiteTextRect)-TextSize.cx)/2),
                    lpcwd->WhiteTextRect.top + ((RectHeight(lpcwd->WhiteTextRect)-TextSize.cy)/2), "Icon On White", 13 );
    GetTextExtentPoint32( hDC, "XOR Mask", 8, &TextSize );
    TextOut( hDC, lpcwd->XORTextRect.left + ((RectWidth(lpcwd->XORTextRect)-TextSize.cx)/2),
                    lpcwd->XORTextRect.top + ((RectHeight(lpcwd->XORTextRect)-TextSize.cy)/2), "XOR Mask", 8 );
    GetTextExtentPoint32( hDC, "AND Mask", 8, &TextSize );
    TextOut( hDC, lpcwd->ANDTextRect.left + ((RectWidth(lpcwd->ANDTextRect)-TextSize.cx)/2),
                    lpcwd->ANDTextRect.top + ((RectHeight(lpcwd->ANDTextRect)-TextSize.cy)/2), "AND Mask", 8 );
}
/* End EraseBackground() ***************************************************/




/****************************************************************************
*
*     FUNCTION: CreateChildren
*
*     PURPOSE:  Create the listbox, fills it with entries
*
*     PARAMS:   HWND hWnd - The MDI window of interest
*
*     RETURNS:  BOOL - TRUE for success, FALSE for failure
*
* History:
*                July '95 - Created
*