Style_set_text_font not working

How-to
,
1

Working in keil IDE on stm32H7 mcu
lvgl v 7.10
and cant change font.

in conf.h ive set #define LV_FONT_MONTSERRAT_26 1

global:
extern lv_font_t lv_font_montserrat_26;
static lv_style_t label_style;
static lv_style_t* labelstyle_pointer=&label_style;

style init code :
void init_label_style(void)
{
lv_style_init(labelstyle_pointer);
lv_style_set_text_font(labelstyle_pointer,LV_STATE_DEFAULT,&lv_font_montserrat_26);
}

label init code:
lv_obj_t* sample_label= lv_label_create(lv_scr_act(), NULL);
// lv_obj_align(sample_label, NULL, LV_ALIGN_IN_TOP_MID, -50, 0);
lv_label_set_align(sample_label, LV_LABEL_ALIGN_CENTER);
lv_label_set_text(sample_label, “sometext”);
lv_obj_add_style( sample_label, LV_OBJ_PART_MAIN,labelstyle_pointer);`

so compiler tells me that there are no problems at all (definition seems fine)
but default font seems used.
i still didnt understand if i should declare lv_style_t object in globals or not. (For example for simple lv objects i need only pointer variable)

so can someone tell me what i am douing wrong?
Also compiler is not makefile that comes with library. standard keil arm compiler is in use.

2

The way that the pointer is created and passed looks a bit over done, but should work. In my code I declare the style static not global but should have the same effect. But should you not first add the style and then set the text? Maybe that will help.

3 
static lv_style_t* stylepointer;
lv_style_init(stylepointer);
  
lv_style_set_text_font(stylepointer,LV_STATE_DEFAULT,&lv_font_montserrat_26);
lv_style_set_shadow_color(stylepointer,LV_STATE_DEFAULT,LV_COLOR_YELLOW);

	lv_obj_t* newtext=lv_label_create(lv_scr_act(), NULL);	lv_obj_add_style(newtext, LV_OBJ_PART_MAIN,stylepointer);
	lv_obj_align(newtext, NULL, LV_ALIGN_CENTER, -50, 0);
	lv_label_set_text(newtext, "?TF is going on?");

ive tried another shot. This code is in main()

same here. font is not changing

also

static lv_style_t style_screen;	
lv_style_init(&style_screen);
lv_style_set_bg_color(&style_screen, LV_STATE_DEFAULT, LV_COLOR_BLACK);
lv_obj_add_style(lv_scr_act(), LV_OBJ_PART_MAIN, &style_screen);

works fine - so the problem is with fonts.

static lv_style_t stylepointer;	
lv_style_init(&stylepointer);
lv_style_set_text_font(&stylepointer,LV_STATE_DEFAULT,&lv_font_montserrat_48);
lv_style_set_shadow_color(&stylepointer,LV_STATE_DEFAULT,LV_COLOR_YELLOW);

	lv_obj_t* newtext=lv_label_create(lv_scr_act(), NULL);
	lv_obj_add_style(newtext, LV_OBJ_PART_ALL,&stylepointer);
	lv_obj_align(newtext, NULL, LV_ALIGN_CENTER, -50, 0);
	lv_label_set_text(newtext, "?TF is going on?");

stylepointer declared not as pointer as for style of screen, but still not working(ive changed to montserrat 48  in last example )

also ive found that style is not affecting on label. So even font color change not working…

4

problem solved

`lv_obj_add_style(newtext, LV_OBJ_PART_MAIN,&style);

lv_obj_add_style(newtext, LV_LABEL_PART_MAIN,&style);
`
i should use second string on label object instead of first. Thats why style wasnt working.