SLIDER - changing appearance

#include "DIALOG.h"


typedef struct {
	GUI_COLOR ThumbCol;
} SLIDER_USER_DATA;


int _SLIDER_CustomSkin(const WIDGET_ITEM_DRAW_INFO * pInfo) {
	SLIDER_USER_DATA Data;


	switch (pInfo->Cmd) {
	case WIDGET_ITEM_DRAW_SHAFT:
		SLIDER_GetUserData(pInfo->hWin, &Data, sizeof(SLIDER_USER_DATA));


		GUI_SetColor(Data.ThumbCol);


		GUI_DrawHLine(pInfo->y1 / 2, pInfo->x0, pInfo->x1);
		break;
	case WIDGET_ITEM_DRAW_THUMB:
		SLIDER_GetUserData(pInfo->hWin, &Data, sizeof(SLIDER_USER_DATA));


		GUI_SetColor(Data.ThumbCol);


		GUI_FillRect(pInfo->x0, pInfo->y0, pInfo->x1, pInfo->y1);
		break;
	default:
		return SLIDER_DrawSkinFlex(pInfo);
		break;
	}


	return 0;
}


void _CreateSlider(int x0, int y0, int xSize, int ySize, GUI_COLOR ThumbCol, int Id) {
	SLIDER_Handle hSlider;
	SLIDER_USER_DATA Data;


	Data.ThumbCol = ThumbCol;


	hSlider = SLIDER_CreateUser(x0, y0, xSize, ySize, WM_HBKWIN, WM_CF_SHOW, 0, Id, sizeof(SLIDER_USER_DATA));


	SLIDER_SetUserData(hSlider, &Data, sizeof(SLIDER_USER_DATA));


	SLIDER_SetSkin(hSlider, _SLIDER_CustomSkin);
}


void MainTask(void) {
	GUI_Init();


	WM_MULTIBUF_Enable(1);


	WM_SetDesktopColor(GUI_BLACK);


	_CreateSlider(100, 100, 500, 50, GUI_YELLOW, GUI_ID_SLIDER0);


	_CreateSlider(100, 200, 500, 50, GUI_RED, GUI_ID_SLIDER1);


	while (1) {
		GUI_Delay(50);
	}
}