C++builder 递归获取继承基类根类-优快云博客

本文展示了如何使用C++编程语言通过类查找器获取类信息，并将其扩展名显示在列表框中。文章包括了使用STL自动指针、类查找器和注册类等功能的详细实现步骤。

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    TClass ClassRef;
    ListBox1->Clear();
    ClassRef = Sender->ClassType();
    while (ClassRef != NULL)
    {
        ListBox1->Items->Add(ClassRef->ClassName());
        ClassRef = ClassRef->ClassParent();
    };

#include <memory>       //For STL auto_ptr class
 
TMetaClass *MetaClass;
 
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  std::auto_ptr<TClassFinder> myClassFinder(new TClassFinder(MetaClass, False));
  TGraphicClass mygraphclass = (TGraphicClass) (myClassFinder->GetClass(Edit2->Text));
//  TGraphicClass mygraphclass = (TGraphicClass) GetClass(Edit2->Text);
  Edit1->Text = GraphicExtension(mygraphclass);
}
 
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
  MetaClass = __classid(TIcon); // ico
  RegisterClasses(&MetaClass, 0);
  MetaClass = __classid(Graphics::TBitmap); // bmp
  RegisterClasses(&MetaClass, 0);
  MetaClass = __classid(TMetafile); // emf
  RegisterClasses(&MetaClass, 0);
  MetaClass = __classid(TShape);  // no graphic extension
  RegisterClasses(&MetaClass, 0);
  MetaClass = __classid(TImage); // no graphic extension
  RegisterClasses(&MetaClass, 0);
}