如何使用C ++ Builder在运行时以编程方式构造组件？ [英] How to programmatically construct components at runtime using C++ Builder?

问题描述

非常基本的C ++ Builder问题。我想在运行时创建一个TButton。我以为下面的代码可以做到，但是我在表单上看不到任何按钮：

Very basic C++ Builder question. I want to create a TButton at runtime. I would have thought that the following code would do it, but I see no button on the form:

__fastcall TForm2::TForm2(TComponent* Owner): TForm(Owner)  
{  
    TButton* b = new TButton(this);  
    b->Height = 100;  
    b->Width = 100;  
    b->Left = 0;   
    b->Top = 0;   
    b->Caption = "Testing";  
    b->Visible = true;  
    b->Enabled = true;  
}  

感谢您的帮助！

推荐答案

您需要设置按钮的 Parent （其显示的表面）：

You need to set the button's Parent (the surface it displays on):

b->Parent = this;

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