I want to add a few TAB gadgets to the menu bar of the window to make them aligned to the left (left-side aligned, starting from the left). Or I want to make my TAB look like 074d8c6c-ac98-42a8-8a15-0e02e26a236a-image.png
I created the layout with code. Below is the code.

Bool DocTabDialog::CreateLayout() { this->SetTitle("DocTab"_s); BaseDocument* doc = GetFirstDocument(); GroupBeginInMenuLine(); GroupBegin(1000, BFH_LEFT , 0, 1, ""_s, 0, 0, 0); GroupSpace(0, 0); while (doc != nullptr)//Traverse all the items and add them to the label { Int32 Index = doc_tab_dialog_arr.GetCount(); DocTabUserArea* doc_tab_user_area = new DocTabUserArea(doc, DOC_TAB); C4DGadget* const userAreaGadget = this->AddUserArea(10000 + Index, BFH_LEFT , 160, 14); if (userAreaGadget != nullptr) this->AttachUserArea((*doc_tab_user_area), userAreaGadget); iferr(doc_tab_dialog_arr.Append(doc_tab_user_area))return false; doc = doc->GetNext(); } addDocTab = new DocTabUserArea(nullptr, ADD_TAB); C4DGadget* userAreaGadget = this->AddUserArea(1001, BFH_LEFT, 30, 14);//Add "Add Tab" button if (userAreaGadget != nullptr) this->AttachUserArea((*addDocTab), userAreaGadget); recDocTab = new DocTabUserArea(nullptr, REC_DOC); userAreaGadget = this->AddUserArea(1002, BFH_LEFT, 30, 14);//Add "History document" button if (userAreaGadget != nullptr) this->AttachUserArea((*recDocTab), userAreaGadget); GroupEnd(); GroupEnd(); return true; }

See more here.

Thanks,
Aimidi

SOLVED Vertex Weight Issue