I’ve been trying everything for a long time and I can’t see how this can be done in c++
I’m stuck on passing the name of the structure to variable.( <T* Class> )
I have tried with GetRow<>, But I don’t know how to put a variable instead of the structure name directly.
I am assuming that you have a pointer to a UDataTable.
In that case you can simple use :
FYourStruct* Item = YourDataTable->FindRow<FYoursStruct>(RowName, "");
if you don’t know the RowName or want to iterate all RowNames, use
TArray<FName> RowNames = YourDataTable->GetRowNames();
.
Yeah that’s just what i got.
I want to change <FYourStructName> for a variable like for example: (This is wrong)
FTableRowBase RowBase = DataTable->FindRow<DataTable->RowStructName>(RowName, ContextString);
That’s not something you can do at all or what is shown in your BP-Screenshot. I do believe that the template parameter has to be known at compile time.
The equivalent to your screenshot is simply:
FName LocalRowName = FDataTableRowHandle.RowName;
FYourStruct* OutRow = FDataTableRowHandle.DataTable->FindRow<FYourStruct>(LocalRowName, "");
If you want to see how GetDataTableRow is implemented see K2Node_GetDataTableRow.cpp.
ok, understood.
What I don’t understand is why it can be done in Blueprints and in C ++ you have to specify the structure, but hey, if that’s the case, that’s the way it will be.
How do I get the pointer? Just like UDataTable* tableName? BEcause that causes an error for me- DataTable error - C++ - Epic Developer Community Forums
My thread
Sorry for necro.
Because Blueprints’ underlying code is doing a lot more work to get the structure type in the return pin, and in C++ the performance is way better for you to have to use the template function to cast to the struct type in question.