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CHoverButton - A simple hoverbutton with one bitmap and a tooltip

, 12 Oct 2000
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A simple drop-in class that provides a 'hot' look button using the _TrackMouseEvent function
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    Sample Image - hoverbutton.gif

    Introduction

    Looking around for some nice bitmap hover buttons, I just couldn't find what I was looking for. In this case there are a couple of things you can do:

    1. Leave it.
    2. Buy it.
    3. Steal it.
    4. Get it for free.
    5. Start crying
    6. Do it yourself (and possibly share it.)

    I'll share!

    I found another hoverbutton class that uses SetCapture() and ReleaseCapture(). Using this method gave me some problems. I can't remember why, but it did to me. So I thought why do it so difficult? MS has a nice API to handle hover states: _TrackMouseEvent().

    So here it is... The class. After a long thought i decided to call it: CHoverButton. I used some classes and information found elsewhere (thanks to the people for that).

    How to use it?

    1. In you resource editor create a button and set the 'owner draw' property.
    2. Use classwizard to create a CButton object in your dialog.
    3. Include the "hoverbutton.h" file in your dialog class file.
    4. Rename the CButton object type to CHoverButton.
    5. Create a bitmap with three buttonstates: Up/Down/Hover. The pictures need to be right next to each other.
      The button will calculate it's own size = (the width of the bitmap)/3.
      You can use true color bitmaps here. See below for an example image.
    6. In the OnInitDialog() load the bitmap with mybutton.LoadBitmap(IDC_MYBUTTON);
    7. Set a tooltip with mybutton.SetToolTipText();
    8. Compile and enjoy.

    Have fun!

    License

    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

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    About the Author

    Niek Albers
    Web Developer
    Netherlands Netherlands
    Niek is the founder and programmer of DaanSystems.com and is working on many projects all the time. He makes a living by doing contractwork for others.

    Comments and Discussions

     
    QuestionEnable/Disable Issue with IE9 PinmemberHydGuy31-Jan-12 4:48 
    GeneralFIX: m_ToolTip.AddTool() with correct button size [modified] PinmemberChristoph Conrad26-Jul-10 1:57 
    GeneralText "Click me" not shown Pinmemberthe Jimmy21-Feb-07 21:10 
    GeneralRe: Text "Click me" not shown Pinmemberyjnevergone5-Apr-09 6:36 
    Generaltext over bitmap Pinmembertyounsi2-Jan-07 15:07 
    Generalload image from file [modified] Pinmembera.damm7-Aug-06 22:51 
    GeneralTransparent bitmaps PinmemberGismow26-Jul-06 23:10 
    Hi,
     
    nice work...
     
    Here's another way to make the bitmap background transparent :
     
    1. Open thze bitmap and fill the background with pink (RGB(255, 0, 255)).
     
    2. Change the DrawItem function from using BitBlt to TransparentBlt.
     
    if(lpDrawItemStruct->itemState & ODS_SELECTED)
    {
    mydc->TransparentBlt(0,0,m_ButtonSize.cx,m_ButtonSize.cy,pMemDC,m_ButtonSize.cx,0,m_ButtonSize.cx,m_ButtonSize.cy, RGB( 255, 0, 255 ));
    }
    else
    {
    if(m_bHover)
    {
    mydc->TransparentBlt(0,0,m_ButtonSize.cx,m_ButtonSize.cy,pMemDC,m_ButtonSize.cx*2,0,m_ButtonSize.cx,m_ButtonSize.cy, RGB( 255, 0, 255 ));
    }else
    {
    mydc->TransparentBlt(0,0,m_ButtonSize.cx,m_ButtonSize.cy,pMemDC,0,0,m_ButtonSize.cx,m_ButtonSize.cy, RGB( 255, 0, 255 ));
    }
    }
     
    Works nice. But be careful. On Windows 9x and ME TransparentBlt produces memory leaks.
     
    Greetinx
    gismow
    Generalplz help me to solve tis problem with getting Front Page 98’s hover buttons to function. Pinmemberac sakura7-Jul-06 2:59 
    Generalu r experiencing problem with getting Front Page 98's Hover buttons to fuction Pinmemberac sakura7-Jul-06 2:53 
    GeneralSlightly Off Topic Pinmember69 Bay4-Jul-06 7:26 
    Generaltooltips Pinmemberramyasangeet8-Mar-06 22:52 
    Generaldinamic creation PinmemberMax Santos8-Feb-06 15:09 
    GeneralButton Not Showing up Pinmembertweetpiyo6-Feb-06 8:15 
    GeneralMinor improvement - transparent background PinmemberHans Dietrich5-Sep-04 10:11 
    GeneralRe: Minor improvement - transparent background PinmemberAnne Jan Beeks25-Jun-05 4:32 
    GeneralRe: Minor improvement - transparent background PinmemberSims11-Aug-05 1:36 
    GeneralRe: Minor improvement - transparent background Pinmembernewofilms7-Dec-05 16:04 
    GeneralButton as Hyperlink in MFC PinmemberSunilJoshi_MCA24-Mar-04 2:59 
    GeneralSomething maybe better! PinmemberTailor28-Feb-04 22:06 
    GeneralProblem compiling example in VC++ 7 PinmemberSick@work4-Nov-03 3:34 
    GeneralRe: Problem compiling example in VC++ 7 PinsussHJ Jo12-Dec-03 2:57 
    GeneralRe: Problem compiling example in VC++ 7 PinmemberJust_a_girl15-May-04 23:58 
    GeneralRe: Problem compiling example in VC++ 7 Pinmemberihawley19-Jul-04 23:58 
    GeneralTrackMouseEvent Pinmembershinay19-Jul-03 12:57 
    GeneralRe: TrackMouseEvent PinsussAnonymous25-Aug-03 23:04 

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