Calculate Area of an Entity by Pick an Internal Point

[nathan307]

Dear Friends,

    How to calculate Area of An entity by pick an Internal Point.

    How to Select an Entity by pick an internal point and How to get the ID of that selected Entity

[nur91m]

I don't understand your first question about area calculation. What kind of entity's area do you want to calculate? Text??!! 

To select entity you need use acedSSGet. Here is code to get selected entity's ID

ads_name ss, ent; 
	AcDbObjectId id = AcDbObjectId::kNull;
	int i=acedSSGet(NULL, NULL, NULL, NULL, ss);  // Pick some entities
	long length = 0;
if ((acedSSLength(ss, &length) != RTNORM) & (length == 0)) {
	acedSSFree( ss );}

for (long i = 0; i < length; i++)                    
{
        if (acedSSName(ss,i,ent) != RTNORM) continue;
        acdbGetObjectId(id,ent);                     // here is your ID
}