Set initial state in a bitmap button

Helper

On 16/10/2017 at 06:54, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   R17
Platform:   Windows ;
Language(s) :     C++ ;

---------
Hello.

I add a BitmapButton parameter in a NodeData's GetDDescription(....).

Here is the code:

const DescID* single_id = description->GetSingleDescID();
DescID custom_button = DescLevel(param_id, CUSTOMDATATYPE_BITMAPBUTTON, 0);
if (!single_id || custom_button.IsPartOf(*single_id, NULL)) {
	BaseContainer cont = GetCustomDataTypeDefault(CUSTOMDATATYPE_BITMAPBUTTON);
	cont.SetInt32(DESC_CUSTOMGUI, CUSTOMGUI_BITMAPBUTTON);
	cont.SetBool(BITMAPBUTTON_BUTTON, true);
	cont.SetBool(BITMAPBUTTON_TOGGLE, true);
	if (resource_image_on > 0)
		cont.SetInt32(BITMAPBUTTON_ICONID1, resource_image_on);
	if (resource_image_off > 0)
		cont.SetInt32(BITMAPBUTTON_ICONID2, resource_image_off);
	description->SetParameter(custom_button, cont, group_id );
}

How can I set the initial state of that bitmap button ?

Thank you.

Helper

On 16/10/2017 at 14:59, xxxxxxxx wrote:

node->SetParameter(DescID(param_id), GeData(TRUE), DESCFLAGS_SET_0);

or GeData(FALSE) for the other state. Best to do this in Init() and not in GetDDescription().

Helper

On 17/10/2017 at 00:42, xxxxxxxx wrote:

Hello.

I can't use SetParameter in GetDDescription due to stack overflow issue (It is called again and again).
Also, using BaseContainer to set the toggle button as bool causes a breakpoint in Cinema 4D.

Thank you.

Helper

On 17/10/2017 at 07:26, xxxxxxxx wrote:

Hello,

as discussed here (get toggle state of BitmapButton) the toggle state is not part of the data type. So I guess one cannot set a default value.

A toggle button is typically created by using a Boolean parameter with a CUSTOMGUI_BITMAPBOOL.

  
const DescID booleanButtonID = DescID(DescLevel(9999, DTYPE_BOOL, 0));  
  
BaseContainer settings = GetCustomDataTypeDefault(DTYPE_BOOL);  
settings.SetBool(BITMAPBUTTON_BUTTON, true);  
settings.SetBool(BITMAPBUTTON_TOGGLE, true);  
settings.SetBool(BITMAPBUTTON_BORDER, BORDER_NONE);  
settings.SetInt32(DESC_ANIMATE, DESC_ANIMATE_OFF);  
settings.SetInt32(DESC_CUSTOMGUI, CUSTOMGUI_BITMAPBOOL);  
settings.SetInt32(BITMAPBOOL_ACTIVE, 300000231);  
settings.SetInt32(BITMAPBOOL_INACTIVE, 300000230);  
  
desc->SetParameter(booleanButtonID, settings, ID_OBJECTPROPERTIES);

As Robert already said, the default value of a parameter should be set in the Init() function.

best wishes,
Sebastian