Dynamic Button generator with an event handler This little program builds buttons on the fly, without using any images

A sample program that generates buttons on the fly, without using images.
Great for simple menus, or buttons on the fly when you need them.
You call the _NewButton() function to generate the buttons for you.
The _DisplayButtons() fuction displays the buttons you have made
The _ButtonEvents()function checks for a mouse click on a button

                                    ` This code was downloaded from The Game Creators
                                    ` It is reproduced here with full permission
                                    ` http://www.thegamecreators.com
                                    
                                    // DarkBasicPro
// Dynamic Button generator with an event handler
// This little program builds buttons on the fly, without using any images
// It is an upgrade to my previous dynamic buttons function.
// You call the _NewButton() function to generate tha buttons for you.
// The _DisplayButtons() fuction displays the buttons you have made
// The _ButtonEvents()function checks for a mouse click on a button
//
// _NewButton() Parameters
// x       The screen x location to place the button
// y       The screen y loation to place the button
// width   The width of the button in pixels
// height  The height of the button in pixels
// r       The Red base RGB color for the button
// g       The Green base RGB color for the button
// b       The Blue base RGB color for the button
// txt$    The Text to appear on the button
//
// How to use
// Call the _NewButton fuvtion for every button you wish to make
// Call the _DisplayButtons function inside the 'do' loop to display buttons
// Call the _ButtonEvents function inside the 'do' loop to get info
// The _ButtonEvents returns the actual text that you placed on the button
// Check the returned button text to call anything you wish in your program
//
// Author: jestermon@live.com

SYNC ON

TYPE _dynabutton
	_sprite AS INTEGER
	_image AS INTEGER
	_txt AS STRING
	_x AS INTEGER
	_y AS INTEGER
ENDTYPE
DIM _Button() AS _dynabutton
DIM _MousePointer(1) AS _dynabutton


_NewButton(80, 65, 180,22,50,0,0,"SIMPLE DEMO MENU")
_NewButton(100,100,140,25,0,0,150,"START")
_NewButton(100,130,140,25,0,0,150,"OPTIONS")
_NewButton(100,160,140,25,0,0,150,"VIDEO")
_NewButton(100,190,140,25,0,0,150,"SOUND")
_NewButton(100,220,140,25,0,0,150,"QUIT")


DO
	_DisplayButtons()  `must be called
	_command$ = _ButtonEvents()  `must be called
	
	//Do your own processing if the _command$ matches the text for your button
	IF _command$ = "START" THEN TEXT 100,420,"The " + _command$ +" button has been selected"
	IF _command$ = "VIDEO" THEN TEXT 100,420,"Yeah! you selected " + _command$
	TEXT 100,400,_command$
	
	SYNC
LOOP
END


FUNCTION _ButtonEvents()
	_mouse = MOUSECLICK()
	id = SPRITE COLLISION (9999,0) 
	IF id <> 0 AND _mouse = 1
		count = ARRAY COUNT (_Button()) 
		FOR i = 0 TO count
			IF id = _Button(i)._sprite
				txt$ = _Button(i)._txt
				EXITFUNCTION txt$
			ENDIF
		NEXT i
	ENDIF
ENDFUNCTION ""

FUNCTION _DisplayButtons()
	count = ARRAY COUNT (_Button()) 
	FOR i = 0 TO count
		SPRITE _Button(i)._sprite,_Button(i)._x,_Button(i)._y,_Button(i)._image
	NEXT i
	SPRITE 9999,mousex(),mousey(),9999
ENDFUNCTION

FUNCTION _NewButton(x,y,width,height,r,g,b,txt$)
	IF _MousePointer(0)._txt <> "ready"
		_CreateMousePointer()
	ENDIF
	count = ARRAY COUNT (_Button()) 
	idi = 9000 + count  //Image ID
	ids = 9050 + count  //sprite ID
	ARRAY INSERT AT BOTTOM _Button(0)
	_CreateButton(ids,idi,width,height,r,g,b,txt$)
	_Button()._txt = txt$
	_Button()._image = idi
	_Button()._sprite = ids
	_Button()._x = x
	_Button()._y = y
ENDFUNCTION

FUNCTION _CreateMousePointer()
	CREATE BITMAP 31,1,1
	DOT 0,0 ,RGB(0,0,0)
	GET IMAGE 9999,0,0,1,1
	SET CURRENT BITMAP 0
	DELETE BITMAP 31
	_MousePointer(0)._txt = "ready"
ENDFUNCTION

FUNCTION _CreateButton(spriteNo,imageNo,width,height,inkR,inkG,inkB,buttonText$)
	INK RGB(inkR,inkG,inkB),0
	left = 0
	top = 0
	CREATE BITMAP 31,width,height
	FOR i = 0 TO 180
		r = height/2
		x = SIN(i)*r
		y = COS(i)*r
		x1 = left + r - x
		x2 = left + width - r + x
		y = top + y + r
		INC inkR 
		IF inkR > 255 THEN inkR = 255
		INC inkG 
		IF inkG > 255 THEN inkG = 255
		INC inkB 
		IF inkB > 255 THEN inkB = 255
		INK RGB(inkR,inkG,inkB),0
		LINE x1,y,x2,y
	NEXT i
	SET TEXT FONT "arial"
	SET TEXT SIZE height - 5
	INK RGB(0,0,0),0
	SET TEXT TO BOLD
	sz = TEXT SIZE()
	txtTop = top + (height - sz)/2 +1
	BLUR BITMAP 31,3
	INK RGB(255,255,255),0
	CENTER TEXT width/2,txtTop,buttonText$
	GET IMAGE imageNo,0,0,width,height
	SET CURRENT BITMAP 0
	DELETE BITMAP 31
	SPRITE spriteNo,-1000,-1001,imageNo
ENDFUNCTION