PolyBtn, a polygon button class

• Download demo project - 28 Kb

Introduction

CPolyBtn is a simple CButton derivative that allows you to create buttons that aren't rectangles or circles or any other typical geometric shape; with CPolyBtn, you specify the button shape by providing a series of points that define a polygon.

What can it do?

How can I use it?

   // make a triangle button
   std::vector<CPoint> pts;

   const int triEdgeSize = 16;

   pts.push_back(CPoint(0,0));
   pts.push_back(CPoint(triEdgeSize,0));
   pts.push_back(CPoint(0,triEdgeSize));

   m_zoomInBtn.SetPoints(pts);
   m_zoomInBtn.SetBMPOffset(2,2);
   m_zoomInBtn.SetBMPID(IDB_ZOOM_IN, RGB(255,255,255), IDB_ZOOM_IN_DISABLED, <BR>                        RGB(255,255,255));

At this point, you can also add bitmaps, set text positions, etc..

For those of you who demand control, CPolyBtn also provides a way for you to specify the colors for each edge manually (normal, highlight, focused, disabled, etc..). This method takes more work, of course. But if you need that much control, the option is there.

Other options

// optionally set the colors used.
void SetColors(COLORREF highlight, COLORREF down, COLORREF focus, <BR>               COLORREF disabled, COLORREF rollover);
 
// set the color to fill with. default ::GetSysColor(COLOR_BTNFACE);
void SetFillColor(COLORREF fillClr);
  
// draw bitmap at this offset
void SetBMPOffset(int x, int y);
  
// draw window text at this offset
void SetTextOffset(int x, int y);
 
// optional tooltip
void SetTooltipText(LPCTSTR lpszText, BOOL bActivate = TRUE);
void ActivateTooltip(BOOL bEnable = TRUE);
 
// when using the SetPoints method, you can decide to highlight lines 
// that are more than -45 degrees below horizontal (default false)
void AllowHighlightOnGtrNeg45(bool b);
 
// should the button change color when the mouse moves over ? (default false)
void AllowRollover(bool b);

Issues

Anyway...

And remember, be excellent to each other.

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