implement a self-dimensioning TEXT widget

static void cbResizableText(WM_MESSAGE * pMsg)
{
	WM_HWIN hWin;
	hWin = pMsg->hWin;
	switch (pMsg->MsgId)
	{
	case WM_PRE_PAINT:
		{
			const GUI_FONT * pFont;
			char Str[20];
			TEXT_GetText(hWin, Str, 20);
			pFont = GUI_SetFont(TEXT_GetFont(pMsg->hWin));
			int x = GUI_GetStringDistX(Str) + 3;
			WM_SetXSize(hWin, x);
			GUI_SetFont(pFont);
		}
		break;
	}
	TEXT_Callback(pMsg);
}




static TEXT_Handle RESIZABLETEXTWIDGET_Create(int x0, int y0, int xSize, int ySize, WM_HWIN hParent, int WinFlags)
{
	TEXT_Handle hWin;


	hWin = TEXT_CreateEx(x0, y0, xSize, ySize,
			hParent, WinFlags | WM_CF_MEMDEV, TEXT_CF_VCENTER | TEXT_CF_HCENTER, GUI_ID_TEXT0, "" );
	WM_SetCallback(hWin, cbResizableText);
	return hWin;
}

#include "GUI.h"
#include "TEXT.h"


//#define TEST


#ifdef TEST
static void cbResizableText(WM_MESSAGE * pMsg)
{
	WM_HWIN hWin;
	hWin = pMsg->hWin;
	switch (pMsg->MsgId)
	{
	case WM_PRE_PAINT:
		{
			const GUI_FONT * pFont;
			char Str[20];
			TEXT_GetText(hWin, Str, 20);
			pFont = GUI_SetFont(TEXT_GetFont(pMsg->hWin));
			int x = GUI_GetStringDistX(Str) + 3;
			WM_SetXSize(hWin, x);
			GUI_SetFont(pFont);
		}
		break;
	}
	TEXT_Callback(pMsg);
}


static TEXT_Handle RESIZABLETEXTWIDGET_Create(int x0, int y0, int xSize, int ySize, WM_HWIN hParent, int WinFlags)
{
	TEXT_Handle hWin;


	hWin = TEXT_CreateEx(x0, y0, xSize, ySize,
			hParent, WinFlags | WM_CF_MEMDEV, TEXT_CF_VCENTER | TEXT_CF_HCENTER, GUI_ID_TEXT0, "" );
	WM_SetCallback(hWin, cbResizableText);
//	TEXT_SetBkColor(hWin, GUI_WHITE);
	return hWin;
}
#endif // TEST


static void cb(WM_MESSAGE * pMsg)
{
	WM_HWIN hWin;
	hWin = pMsg->hWin;
	switch (pMsg->MsgId)
	{
	case WM_PAINT:
		{
			GUI_RECT Rect;
//			WM_GetInsideRectEx(hWin, &Rect);
			WM_GetClientRect(&Rect);
			GUI_SetBkColor(GUI_DARKGREEN);
			GUI_ClearRectEx(&Rect);


			GUI_SetColor(GUI_LIGHTRED);
			GUI_DrawRectEx(&Rect);
		}
		break;
	default:
		WM_DefaultProc(pMsg);
	}
}




void MainTask(void)
{
  GUI_Init();
  GUI_EnableAlpha(1);


  GUI_SetBkColor(GUI_DARKGRAY);
  GUI_Clear();


  WM_HWIN hParent, hWin;


  hParent = WM_CreateWindowAsChild(10, 10, 60, 25, WM_HBKWIN,
					WM_CF_SHOW, cb, 0);


#ifdef TEST
  hWin = RESIZABLETEXTWIDGET_Create(4,4, 1, 12, hParent, WM_CF_SHOW);
#else
  hWin = TEXT_CreateEx(4,4, 1, 12, hParent, WM_CF_SHOW, TEXT_CF_VCENTER | TEXT_CF_HCENTER, GUI_ID_TEXT0, "" );
#endif
  TEXT_SetBkColor(hWin, GUI_DARKBLUE);
  TEXT_SetTextColor(hWin, GUI_DARKYELLOW);


  while(1)
  {
		GUI_Delay(2000);
		TEXT_SetText(hWin, "A");
#ifndef TEST
		const GUI_FONT * pFont;
		pFont = GUI_SetFont(TEXT_GetFont(hWin));
		int x = GUI_GetStringDistX("A") + 3;
		WM_SetXSize(hWin, x);
		GUI_SetFont(pFont);
#endif // TEST


		GUI_Delay(2000);
		TEXT_SetText(hWin, "WWW");
#ifndef TEST
		pFont = GUI_SetFont(TEXT_GetFont(hWin));
		x = GUI_GetStringDistX("WWW") + 3;
		WM_SetXSize(hWin, x);
		GUI_SetFont(pFont);
#endif // TEST
  }
}