Simple C++ switch

[Capn_Geoff]

I use a ton of very simple 2 position switches. In the old days of FSX
if (underway_switch_sw == 1) {
SHOW_LISTELEMENT(pgauge->elements_list[0], 2);
HIDE_LISTELEMENT(pgauge->elements_list[0], 1);
}

this would work to switch the visuals of the switch. But there is no SHOW_LISTELEMENT in P3D.
The only thing I can find that's close is:
HIDE_IMAGE(underway_switch_plist1[0]);
SHOW_IMAGE(underway_switch_plist2[0]);

But these two functions want an element - whatever type that is (I haven't a clue). I've tried using just about anything the compiler wouldn't complain about. The only example I've found is from the SDK:
if(gs_var.var_value.n == 0)
{
HIDE_IMAGE((&gs_slider));
HIDE_IMAGE((&gs_background));
}

But there is no clue as to what gs_slider or gs_background are. Any help greatly appreciated!

 

[razorvans]

You could try instead of using the SHOW/HIDE LISTELEMENT. Change your object from STATIC ELEMENT to ICON.

Cheers

Mauricio

 

[ddawson]

The best place for the SHOW_IMAGE and HIDE_IMAGE macros is in the callback function for the element in question.
Something like this:

double FSAPI callback5( PELEMENT_ICON pelement)
{
if ( active == 0 ) { HIDE_IMAGE(pelement) ; }
else { SHOW_IMAGE(pelement) ; }
return pelement->source_var.var_value.n;
}

 

[Capn_Geoff]

Without going into too much boring detail below is, I think, the relevant code.
A couple of things to note: First - I can change the appearance of the switch when you switch to the panel that it is on at first, but it will not change after the first time. I can set it to on, off, or both visually. Second I know the code for the Show/Hide Image is being executed because I put print statement in both side of the switch update (callback). Any idea why the image refuses to change?

GAUGE_CALLBACK underway_switch_update;
GAUGE_HEADER_FS700(GAUGE_W, underway_switch_gauge_name, &underway_switch_list, underway_switch_mouse_rect,underway_switch_update, 0,0,0 );



MOUSE_BEGIN(underway_switch_mouse_rect, 0, 0, 0)

MOUSE_CHILD_FUNCT(0, 0, 50, 75, CURSOR_CROSSHAIR, MOUSE_LEFTSINGLE, underway_switch_mcb)​

MOUSE_END


MAKE_ICON(underway_switch_off_icon,

PANEL_UNDERWAY_SW_OFF,
NULL,
NULL,
IMAGE_USE_TRANSPARENCY | IMAGE_USE_ERASE,
0,
0, 0,
MODULE_VAR_NONE, NULL,
ICON_SWITCH_TYPE_SET_CUR_ICON,
1, //1 original
0,
0)​

PELEMENT_HEADER underway_switch_plist1[] = {&underway_switch_off_icon.header,NULL};

MAKE_ICON(underway_switch_on_icon,

PANEL_UNDERWAY_SW_ON,
underway_switch_plist1,
NULL,
IMAGE_USE_TRANSPARENCY | IMAGE_USE_ERASE,
0,
0, 0,
MODULE_VAR_NONE, NULL,
ICON_SWITCH_TYPE_SET_CUR_ICON,
1, //1 original
0,
0)​

PELEMENT_HEADER underway_switch_plist2[] = { &underway_switch_on_icon.header,NULL };


MAKE_STATIC ( underway_switch_off_static,

PANEL_UNDERWAY_SW_OFF, //PANEL_SW_BG, //PANEL_UNDERWAY_SW_OFF, //PANEL_UNDERWAY_SW_OFF, //PANEL_SW_BG, //LAUNCH_LIGHT_ON_BMP, //PANEL_UNDERWAY_SW_OFF,
underway_switch_plist2,
NULL,
IMAGE_USE_TRANSPARENCY, // | IMAGE_USE_ERASE, //erase | transparent,
0,
0,0 )​

PELEMENT_HEADER underway_switch_list = &underway_switch_off_static.header;

void FSAPI underway_switch_update(PGAUGEHDR pgauge, SINT32 service_id, UINT_PTR extra_data) {

if (underway_switch_sw == 1) {

HIDE_IMAGE((&underway_switch_off_icon));
SHOW_IMAGE((&underway_switch_on_icon));​

} else {

HIDE_IMAGE((&underway_switch_on_icon));
SHOW_IMAGE((&underway_switch_off_icon));​

}​

}

 

[ddawson]

If you #define PANEL_UNDERWAY_SW_OFF and PANEL_UNDERWAY_SW_ON with consecutive resource numbers, you can do this and the work will be done for you by the callback function:

FLOAT64 FSAPI switch0_icon_cb( PELEMENT_ICON pelement)
{
return (FLOAT64)underway_switch_sw;
}

MAKE_ICON(underway_switch_off_icon,PANEL_UNDERWAY_SW_OFF,NULL,NULL,IMAGE_USE_ERASE | IMAGE_USE_TRANSPARENCY ,0,0,0,MODULE_VAR_NONE,
switch0_icon_cb,ICON_SWITCH_TYPE_STEP_TO,
2,0,0)

PELEMENT_HEADER underway_switch_plist1[] = {&underway_switch_off_icon.header,NULL};

MAKE_STATIC ( underway_switch_off_static,
PANEL_UNDERWAY_SW_OFF, //PANEL_SW_BG, //PANEL_UNDERWAY_SW_OFF, //PANEL_UNDERWAY_SW_OFF, //PANEL_SW_BG, //LAUNCH_LIGHT_ON_BMP, //PANEL_UNDERWAY_SW_OFF,
underway_switch_plist1,
NULL,
IMAGE_USE_TRANSPARENCY, // | IMAGE_USE_ERASE, //erase | transparent,
0,
0,0 )

PELEMENT_HEADER underway_switch_list = &underway_switch_off_static.header;

 

[Capn_Geoff]

Wow! What an idiot! I tried using a multi switch, but somehow I missed that the MAKE_ICON had a separate callback. Jeeze - 5 days wasted. Well not really, I learned more than I cared to about ICONs. In your earlier post I was like "What - how do you return a float from a void callback? And only one argument?" Now I see it. Thank you so very much! Now I can get on with the FSX to P3dv4 conversion.

SOLVED!