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Graphical Menu Design

 
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  #1
Sep 7th, 2009
Hi .
How we can design graphical menus in c++ for a multimedia device ?
Thanks ...
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Re: Graphical Menu Design

 
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  #2
Sep 7th, 2009
We usually start by thinking about what we want. Then we might even draw it before working up a quick prototype. If the prototype meets out needs, we do the full implementation.
I'm here to prove you wrong.
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Re: Graphical Menu Design

 
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  #3
Sep 8th, 2009
I say that how we can combining graphic and c++ to design this menus .
For example, look at this codes :
C++ Syntax (Toggle Plain Text) 
  1. /*
  2.  * volume screen coordinate constants 
  3.  */
  4. #define VOL_ICON_DIMX 32
  5. #define VOL_ICON_DIMY 32
  6. static const unsigned int VolumeIcon [] = {
  7. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  8. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  9. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  10. 0xffffffff, 0xffffffff, 0xff00ffff, 0xffffffff,
  11. 0xffffffff, 0xffffffff, 0x0000ffff, 0xffffffff,
  12. 0xffffffff, 0xffffff00, 0x0000ffff, 0x00ffffff,
  13. 0xffffffff, 0xffff0000, 0x0000ffff, 0xff00ffff,
  14. 0xffffffff, 0xff000000, 0x0000ffff, 0xff00ffff,
  15. 0xffffffff, 0x00000000, 0x0000ff00, 0xff00ffff,
  16. 0xffffff00, 0x00000000, 0x0000ff00, 0xffff00ff,
  17. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  18. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  19. 0x00000000, 0x00000000, 0x0000ffff, 0x00ffff00,
  20. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  21. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  22. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  23. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  24. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  25. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  26. 0x00000000, 0x00000000, 0x0000ffff, 0x00ffff00,
  27. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  28. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  29. 0xffffff00, 0x00000000, 0x0000ff00, 0xffff00ff,
  30. 0xffffffff, 0x00000000, 0x0000ff00, 0xff00ffff,
  31. 0xffffffff, 0xff000000, 0x0000ffff, 0xff00ffff,
  32. 0xffffffff, 0xffff0000, 0x0000ffff, 0xff00ffff,
  33. 0xffffffff, 0xffffff00, 0x0000ffff, 0x00ffffff,
  34. 0xffffffff, 0xffffffff, 0x0000ffff, 0xffffffff,
  35. 0xffffffff, 0xffffffff, 0xff00ffff, 0xffffffff,
  36. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  37. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  38. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff
  39. };
  40. static unsigned char pel_mask[4096];

What it say ?
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Re: Graphical Menu Design

 
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  #4
Sep 8th, 2009
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Originally Posted by Behi Jon View Post
For example, look at this codes :
[..code..]

What it say ?
It declares an int-array and loads it with values. The array is const static which means that the values in the array cannot be changed.

The second line of code declares a static unsigned char array with a size of 4096 elements. But it doesn't have any values yet. This is not a problem, because the second array isn't const, so the values may be loaded later.

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Re: Graphical Menu Design

 
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  #5
Sep 8th, 2009
I think you don't understand my intention . How can I convert a graphical shape to data such as preceded example :
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, .................
How can I use graphic in c++ ? Don't say that I can use libraries . Because I want to compile the code for a micro of a multimedia device .
Last edited by Behi Jon; Sep 8th, 2009 at 5:00 am.
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Re: Graphical Menu Design

 
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  #6
Sep 8th, 2009
I think you don't understand my intention . How can I convert a graphical shape to data such as preceded example :
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, .................
How can I use graphic in c++ ? Don't say that I can use libraries . Because I want to compile the code for a micro of a multimedia device .
Last edited by Behi Jon; Sep 8th, 2009 at 5:00 am.
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Re: Graphical Menu Design

 
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  #7
Sep 8th, 2009
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Originally Posted by Behi Jon View Post
I think you don't understand my intention . How can I convert a graphical shape to data such as preceded example :
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, .................
That's not a graphical shape. It's data nothing more and nothing less.

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Originally Posted by Behi Jon View Post
How can I use graphic in c++ ? Don't say that I can use libraries .
Fine, I won't. But you actually do need them.
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Re: Graphical Menu Design

 
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  #8
Sep 8th, 2009
What a pity that I can't convey my intention . All right . Thanks .
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Re: Graphical Menu Design

 
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  #9
Sep 8th, 2009
Please see this codes :
C++ Syntax (Toggle Plain Text) 
  1. /*
  2.  * VOL.C 						ver 0.1
  3.  *
  4.  * (c) Copyright SGS-Thomson Microelectronics Limited 1996. 
  5.  *
  6.  * Source file name : VOL.C
  7.  * Authors	T.H.Thillai Rajan (tht.rajan@st.com)
  8.  *
  9.  * Original Work:  none
  10.  *
  11.  * =======================
  12.  * IMPROVEMENTS THOUGHT OF
  13.  * =======================
  14.  *
  15.  * =====================
  16.  * MODIFICATION HISTORY:
  17.  * =====================
  18.  *
  19.  * Date		Initials		Modification               								
  20.  * ----     --------		------------               								
  21.  * 07.04.97	THT			CREATED															
  22.  */
  23. /*{{{ Include files*/
  24. #include "appldef.h"
  25. /*}}}*/
  26.  
  27. /*{{{ module dependant includes*/
  28. #include "usif_ext.h"
  29. /*}}}*/
  30.  
  31. /*
  32.  * volume screen coordinate constants 
  33.  */
  34. #define VOL_ICON_DIMX 32
  35. #define VOL_ICON_DIMY 32
  36.  
  37. static const unsigned int VolumeIcon [] = {
  38. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  39. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  40. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  41. 0xffffffff, 0xffffffff, 0xff00ffff, 0xffffffff,
  42. 0xffffffff, 0xffffffff, 0x0000ffff, 0xffffffff,
  43. 0xffffffff, 0xffffff00, 0x0000ffff, 0x00ffffff,
  44. 0xffffffff, 0xffff0000, 0x0000ffff, 0xff00ffff,
  45. 0xffffffff, 0xff000000, 0x0000ffff, 0xff00ffff,
  46. 0xffffffff, 0x00000000, 0x0000ff00, 0xff00ffff,
  47. 0xffffff00, 0x00000000, 0x0000ff00, 0xffff00ff,
  48. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  49. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  50. 0x00000000, 0x00000000, 0x0000ffff, 0x00ffff00,
  51. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  52. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  53. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  54. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  55. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  56. 0x00000000, 0x00000000, 0x0000ffff, 0xff00ff00,
  57. 0x00000000, 0x00000000, 0x0000ffff, 0x00ffff00,
  58. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  59. 0x00000000, 0x00000000, 0x0000ffff, 0x00ff00ff,
  60. 0xffffff00, 0x00000000, 0x0000ff00, 0xffff00ff,
  61. 0xffffffff, 0x00000000, 0x0000ff00, 0xff00ffff,
  62. 0xffffffff, 0xff000000, 0x0000ffff, 0xff00ffff,
  63. 0xffffffff, 0xffff0000, 0x0000ffff, 0xff00ffff,
  64. 0xffffffff, 0xffffff00, 0x0000ffff, 0x00ffffff,
  65. 0xffffffff, 0xffffffff, 0x0000ffff, 0xffffffff,
  66. 0xffffffff, 0xffffffff, 0xff00ffff, 0xffffffff,
  67. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  68. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
  69. 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff
  70. };
  71.  
  72. static unsigned char pel_mask[4096];
  73.  
  74. #define	VOL_BOX_ROW_START		70
  75. #define	VOL_BOX_COL_START		344
  76. #define	VOL_BOX_WIDTH			222
  77. #define	VOL_BOX_HEIGHT			36
  78. #define	VOL_BOX_ROW_END		( VOL_BOX_ROW_START + VOL_BOX_HEIGHT )
  79. #define	VOL_BOX_COL_END		( VOL_BOX_COL_START + VOL_BOX_WIDTH )
  80.  
  81. #define	VOL_ICON_ROW		( VOL_BOX_ROW_START + 2 )
  82. #define	VOL_ICON_COL		( VOL_BOX_COL_START + 4 )
  83.  
  84. #define	VOL_SLIDE_BOX_ROW_START	( VOL_BOX_ROW_START + 2 )
  85. #define	VOL_SLIDE_BOX_COL_START	( VOL_BOX_COL_START + 40 )
  86. #define	VOL_SLIDE_BOX_WIDTH 		176//342
  87. #define	VOL_SLIDE_BOX_HEIGHT		32
  88. #define	VOL_SLIDE_BOX_ROW_END	( VOL_SLIDE_BOX_ROW_START + VOL_SLIDE_BOX_HEIGHT )
  89. #define	VOL_SLIDE_BOX_COL_END	( VOL_SLIDE_BOX_COL_START + VOL_SLIDE_BOX_WIDTH )
  90.  
  91. /*
  92.  * CODE							:	DisplayVolume
  93.  * TYPE							:	sub-routine
  94.  * PROTOTYPE					:  
  95.  *		int DisplayVolume ( char cInvokedBy );
  96.  *
  97.  * STACK							:	callers stack
  98.  * INPUT							:	
  99.  *	a. cInvokedBy		char
  100.  *		identifies the type of the key which has invoked this function
  101.  *
  102.  * OUTPUT						: 	
  103.  * a.	iKeyValue		int
  104.  *	   <= 0	Timed Out while waiting for active keys ( VOL+/ VOL-/ MUTE)
  105.  *		> 0 the key scan code which was different from the active keys
  106.  *
  107.  * GLOBAL VARIABLES USED	:
  108.  *	a. tclkWaitDuration			int  					( W )
  109.  * b. bScreen2bCleared		BOOLEAN				( W )
  110.  *
  111.  * DEVICES ACCESSED			:	nothing
  112.  * FUNCTIONS CALLED			:  
  113.  *
  114.  * CALLERS						:	
  115.  *	a.	usif_process						..\USIF\SOURCE\USIF.C
  116.  * 
  117.  * PURPOSE:
  118.  *	this routine displays the current volume level in graphical form.
  119.  *
  120.  * ALGORITHM:	
  121.  *	1. Clear the screen and draw the outer rectangle box 
  122.  *	2.	wait for the user to press any of the active keys (VOL+/VOL-/MUTE)
  123.  *	3.	if any keys other then active keys present then return to the caller
  124.  *		with the actual key value read.
  125.  *	4.	take appropriate action based on the active key value read.
  126.  *	5. goto step 2. 
  127.  *
  128.  * IMPROVEMENT(s) THOUGHT OF:
  129.  */
  130. /*{{{ DisplayVolume ()*/
  131. int	DisplayVolume ( char	cVolumeAction )
  132. {
  133. 	extern	void mpeg_set_audio_volume_LR ( unsigned int left_volume, unsigned int right_volume );
  134. 	int	iKeyScanCode,i;
  135. 	BOOLEAN	bPrintMessage;
  136. 	char	cPrevVolLevel;
  137.  
  138. 	gprim_cls ( C_TRANS );
  139. 	gprim_setfcol ( C_THIGHLIGHT );
  140. 	gprim_setbcol ( C_BACKGROUNDDARK );
  141. 	gprim_frect ( VOL_BOX_COL_START, VOL_BOX_ROW_START, VOL_BOX_COL_END, VOL_BOX_ROW_END );
  142.  
  143. 	switch ( cVolumeAction )
  144. 	{
  145. 		case INCREASE_VOLUME:
  146. 			cCurVolLevel += VOLUME_STEP;
  147. 			if ( cCurVolLevel >= MAX_VOL_LEVEL )
  148. 				cCurVolLevel = MAX_VOL_LEVEL;
  149. 			break;
  150.  
  151. 		case DECREASE_VOLUME:
  152. 			cCurVolLevel -= VOLUME_STEP;
  153. 			if ( cCurVolLevel < MIN_VOL_LEVEL )
  154. 				cCurVolLevel = MIN_VOL_LEVEL;
  155. 			break;
  156.  
  157. 		case MUTE_VOLUME:
  158. 			if ( bAudioMuteState == TRUE )
  159. 			{
  160. 				bAudioMuteState = FALSE;
  161. 				mpeg_unmute_audio ();
  162. 			}
  163. 			else
  164. 			{
  165. 				bAudioMuteState = TRUE;
  166. 				mpeg_mute_audio ();
  167. 			}
  168. 			break;
  169. 	}
  170.  
  171. 	bPrintMessage = TRUE;
  172. 	cPrevVolLevel = cCurVolLevel;
  173.  
  174. 	gprim_setfcol ( C_TRANS );
  175. 	gprim_setbcol ( C_THIGHLIGHT );
  176. 	gprim_frect ( VOL_SLIDE_BOX_COL_START, VOL_SLIDE_BOX_ROW_START, VOL_SLIDE_BOX_COL_END, VOL_SLIDE_BOX_ROW_END );
  177.  
  178. 	while ( TRUE )
  179. 	{
  180. 		mpeg_set_audio_volume_LR ( cCurVolLevel, cCurVolLevel );
  181. 		UpdateBoxVolInfo ( cCurVolLevel, cCurVolBalance, bAudioMuteState );
  182.  
  183. 		if ( bPrintMessage == TRUE )
  184. 		{
  185. 			bPrintMessage = FALSE;
  186.  
  187. 			gprim_setfcol ( C_THIGHLIGHT );
  188. 			gprim_setbcol ( C_BACKGROUNDDARK );
  189. 			gprim_frect ( VOL_ICON_COL, VOL_ICON_ROW, VOL_ICON_COL+32, VOL_ICON_ROW+32 );
  190.  
  191. 			gprim_setbcol ( C_THIGHLIGHT );
  192. 			if ( bAudioMuteState == TRUE )
  193. 			{
  194. 				gprim_setfcol ( C_BACKMEDIUM );
  195. 				ShowVolumeIcon();
  196. 				gprim_line ( VOL_ICON_COL, VOL_ICON_ROW, VOL_ICON_COL + 32, VOL_ICON_ROW + 32 );
  197. 				gprim_line ( VOL_ICON_COL, VOL_ICON_ROW+32, VOL_ICON_COL+32, VOL_ICON_ROW );
  198. 			}
  199. 			else
  200. 			{
  201. 				gprim_setfcol ( C_GREEN );
  202. 				ShowVolumeIcon();
  203. 			}
  204.  
  205. 			gprim_setbcol ( C_TRANS );
  206. 			for(i=48; i<cCurVolLevel+1; i++)
  207. 			gprim_frect ( VOL_SLIDE_BOX_COL_START+5+(i- MIN_VOL_LEVEL)*10, VOL_SLIDE_BOX_ROW_START+2, VOL_SLIDE_BOX_COL_START+5+(i- MIN_VOL_LEVEL)*10+5, VOL_SLIDE_BOX_ROW_END-4 );
  208. 		}
  209.  
  210. 		wait_duration_forced_during = WAIT_AT_VOLUME_CONTROL;
  211. 		if ( bAudioMuteState == TRUE )
  212. 		tclkWaitDuration 		= INDEFINITE_WAIT;
  213. 		else
  214. 		tclkWaitDuration 		= WAIT_FOR_3_SEC;
  215.  
  216. 		cPrevVolLevel = cCurVolLevel;
  217.  
  218. 		if ( bAudioMuteState == TRUE )
  219. 		{
  220. 			gprim_setfcol ( C_BACKMEDIUM );
  221. 		}
  222. 		else
  223. 		{
  224. 			gprim_setfcol ( C_GREEN );
  225. 		}
  226.  
  227. 		mpeg_set_audio_volume ( cCurVolLevel );
  228. 		iKeyScanCode = ReadKey ( CURSOR_OFF, tclkWaitDuration );
  229.  
  230. 		switch ( iKeyScanCode )
  231. 		{
  232.         	case VOLUME_NEXT_KEY:
  233. 			case VOL_UP_CUM_RIGHT_ARROW_KEY:
  234. 				if ( bAudioMuteState == TRUE )
  235. 				{
  236. 					bAudioMuteState = FALSE;
  237. 					mpeg_unmute_audio ();
  238. 					bPrintMessage = TRUE;
  239. 				}
  240.  
  241. 				cCurVolLevel += VOLUME_STEP;
  242. 				if ( cCurVolLevel >= MAX_VOL_LEVEL )
  243. 					cCurVolLevel = MAX_VOL_LEVEL;
  244. 				if ( cPrevVolLevel != MAX_VOL_LEVEL )
  245. 				gprim_frect ( VOL_SLIDE_BOX_COL_START+5+(cCurVolLevel- MIN_VOL_LEVEL)*10, VOL_SLIDE_BOX_ROW_START+2, VOL_SLIDE_BOX_COL_START+5+(cCurVolLevel- MIN_VOL_LEVEL)*10+5, VOL_SLIDE_BOX_ROW_START+VOL_SLIDE_BOX_HEIGHT-4 );
  246. 				break;
  247.  
  248. 			case VOLUME_PREV_KEY:
  249. 			case VOL_DOWN_CUM_LEFT_ARROW_KEY:
  250.  
  251. 				if ( bAudioMuteState == TRUE )
  252. 				{
  253. 					bAudioMuteState = FALSE;
  254. 					mpeg_unmute_audio ();
  255. 					bPrintMessage = TRUE;
  256. 				}
  257.  
  258. 				cCurVolLevel -= VOLUME_STEP;
  259. 				if ( cCurVolLevel < MIN_VOL_LEVEL )
  260. 					cCurVolLevel = MIN_VOL_LEVEL;
  261. 				if ( cPrevVolLevel != MIN_VOL_LEVEL )
  262. 				{
  263. 				gprim_setfcol ( C_TRANS );
  264. 				gprim_frect ( VOL_SLIDE_BOX_COL_START+5+(cPrevVolLevel- MIN_VOL_LEVEL)*10, VOL_SLIDE_BOX_ROW_START+2, VOL_SLIDE_BOX_COL_START+5+(cPrevVolLevel- MIN_VOL_LEVEL)*10+5, VOL_SLIDE_BOX_ROW_START+VOL_SLIDE_BOX_HEIGHT-4 );
  265. 				}
  266. 				break;
  267.  
  268. 			case MUTE_KEY:
  269. 				if ( bAudioMuteState == TRUE )
  270. 				{
  271. 					bAudioMuteState = FALSE;
  272. 					mpeg_unmute_audio ();
  273. 				}
  274. 				else
  275. 				{
  276. 					bAudioMuteState = TRUE;
  277. 					mpeg_mute_audio ();
  278. 				}
  279. 				bPrintMessage = TRUE;
  280. 				break;
  281.  
  282. 			default:
  283. 				gprim_cls ( C_TRANS );
  284. 				return iKeyScanCode;
  285. 		}
  286. 	}
  287. }
  288.  
  289. void ShowVolumeIcon()
  290. {
  291.  
  292. 	int j;
  293. 	int dim_x, dim_y;
  294. 	unsigned int *pel;
  295. 	int IabsX=VOL_ICON_COL;
  296. 	int IabsY=VOL_ICON_ROW;
  297.  
  298. 	dim_x = VOL_ICON_DIMX ;
  299. 	dim_y = VOL_ICON_DIMY ;
  300. 	pel = (unsigned int *) VolumeIcon;
  301.  
  302. 	/* Make the Transparent Mask  - Color 0 is transparent */
  303. 	for (j = 0; j < (dim_x * dim_y) /8; j++ )
  304. 		{
  305. 		/* Transparency mask */
  306. 		pel_mask[j]  = ((pel[j] & 0xF0000000) != 0) << 7;
  307. 		pel_mask[j] |= ((pel[j] & 0x0F000000) != 0) << 6;
  308. 		pel_mask[j] |= ((pel[j] & 0x00F00000) != 0) << 5;
  309. 		pel_mask[j] |= ((pel[j] & 0x000F0000) != 0) << 4;
  310. 		pel_mask[j] |= ((pel[j] & 0x0000F000) != 0) << 3;
  311. 		pel_mask[j] |= ((pel[j] & 0x00000F00) != 0) << 2;
  312. 		pel_mask[j] |= ((pel[j] & 0x000000F0) != 0) << 1;
  313. 		pel_mask[j] |= ((pel[j] & 0x0000000F) != 0);
  314. 		}
  315.  
  316. 	gprim_setpel(dim_x, dim_y, true, pel, pel_mask , 0, 0);
  317. 	gprim_pel(IabsX, IabsY);
  318.  
  319. }
  320. /*}}}*/
  321. 
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Re: Graphical Menu Design

 
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  #10
Sep 8th, 2009
>> (c) Copyright SGS-Thomson Microelectronics Limited 1996.

Do they know you've just put their code on the web?

Do you have a question?
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