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Posted 17 Jan 2000

An LED Style display control and bar control

, 17 Jan 2000
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A control to display time, floating point numbers or integers using an LED digital-style display
  • Download demo project - 32 Kb
  • Download source files - 8 Kb
  • Sample Image - StaticCounter.gif

    <!-- Article Starts -->

    The CStaticCounter class simplifies the display of time and numerical values using a digital-style counter - without using bitmaps.

    The class uses Keith Rule's double-buffering class to completely remove flicker, and it uses MoveTo/LineTo for drawing, and therefore has no dependancies on bitmaps.

    The original class was written quite a while ago now and can be found at CodeGuru. This version, however, has a lot more functionality. New features include:

    • Floating Point display
    • Time Display
    • Bug fixed: Memory leak in Draw() function
    • Mouse interaction (optional) with the ability to make large & small changes, and these changes adapt to whether the control is in 'float' or 'integer' mode.
    • 3D Progress bar class (I 'borrowed' the technique from the very cool <a href="">progress control by Paul Meidinger) which I implemented as a separate class for max re-use
    • Built-in (optional) notification. Trap WM_UPDATE_STATIC messages in your dialog and get up-to-date change notifications when user interacts with the control.
    • Supply ID's to each or any of your CStaticCounter controls to enable you to identify them upon trapping the WM_UPDATE_STATIC message
    • Set (optional) blank padding for either float or integer displays
    • Define your own format strings to further customise the output display of the CStaticCounter

    The class also uses static control's dimensions to calculate metrics, which means it'll draw well formed digits with minimal intervention, regardless of the control's size.

    How to use the CStaticCounter

    If the control is being used to display integer values:

    Single Click Left Mouse Button:Decreases the value by 1
    Single Click Right Mouse Button:Increases the value by 1
    Left Mouse Button and drag:Increases or decreases by (mouse distance*1)
    Right Mouse Button and drag:Increases or decreases (mouse distance*0.01) - but displays a whole number

    If the control is being used to display floating point values:

    Single Click Left Mouse Button:Decreases the value by 0.01
    Single Click Right Mouse Button:Increases the value by 0.01
    Left Mouse Button and drag:Increases or decreases by (mouse distance*1)
    Right Mouse Button and drag:Increases or decreases (mouse distance*0.01)

    Display Related Methods

    void Display(CString strDisplay) 

    This function will display your string in a digital counter style, ignoring all characters except: 0 1 2 3 4 5 6 7 8 9 . :

    void Display(UINT uSecs=0, UINT uMins=0, UINT uHours=0, UINT uDays=0, 
                 CString strFormat="%D:%H:%M:%S") 

    This function enables you to simply tell the control to display, for instance, 5196 seconds by simply typing Display(5196). The output will be displayed in D:H:M:S format unless you change the format string (last parameter) accordingly.

    void DisplayCurrentTime(CString strFormat = "%H:%M:%S") 


    This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

    A list of licenses authors might use can be found here


    About the Author

    Jason Troitsky
    United Kingdom United Kingdom
    No Biography provided

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    Comments and Discussions

    Generalvery good,thanks Pin
    hpxs16-Oct-08 19:28
    memberhpxs16-Oct-08 19:28 
    GeneralUtilizing in 2005 Pin
    mrwu2128-Apr-08 19:15
    membermrwu2128-Apr-08 19:15 
    GeneralRe: Utilizing in 2005 Pin
    Liu Xia7-May-08 2:31
    memberLiu Xia7-May-08 2:31 
    GeneralAdding a label Pin
    Anders Gustafsson22-Oct-07 6:25
    memberAnders Gustafsson22-Oct-07 6:25 
    GeneralThis is a perfect control! Pin
    martintiger8-Aug-04 20:38
    membermartintiger8-Aug-04 20:38 
    It is wonderful. Can be used both as an indicator and as a slider with increments by one even with very large values. And the lack of bitmaps makes it very suitable for DLLs.

    Great job!
    GeneralMemory DC Question Pin
    alpha+3-Feb-02 9:01
    memberalpha+3-Feb-02 9:01 
    GeneralExcellent control! Pin
    Tom Hunter23-Jan-00 11:15
    memberTom Hunter23-Jan-00 11:15 
    GeneralRe: Excellent control! Pin
    Jason Hattingh24-Jan-00 0:44
    sussJason Hattingh24-Jan-00 0:44 
    GeneralRe: Excellent control! Pin
    Tim Smith24-Mar-02 7:41
    memberTim Smith24-Mar-02 7:41 

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