在运行时更改tframe的大小

Question

首先，关于我的一点点，我是GUI编程的新手，尤其是使用C ++ Builder。我有一个包含一行单元格的tframe，就像上面的图片一样。有一个+按钮，当按下时，一个单元格只被添加到最后一列，如图所示。我想知道是否有可能在运行时更改tframe的大小，因为最后一列变得越来越大。 tframe必须从一行单元格的大小开始。这个tframe没有滚动条。当细胞被添加到最后一列时，它只需要扩展高度。

先谢谢了。

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更多信息。

这里是tframe本身的编码，它添加了红色单元格（这也是另一个tframe jsut fyi）。此tframe也被添加到滚动框中。为了更好地理解，请参考Tree Structure with TFrames中的图片。最终目标是创建tframe的树结构。

此特定任务中的tframe是另一个问题图片中最右边的tframe。

__fastcall TTreeTframe::TTreeTframe(TComponent* Owner)
    : TFrame(Owner)
{
    AddCells();
}
//---------------------------------------------------------------------------
void __fastcall TTreeTframe::AddCells()
{
    //this part adds the cells in the tframe (red boxes in the picture)
    int tempCellRow = 0;
    TCells* NewCellRow = new TCells (this);
    NewCellRow->Parent=this;

    TComponentEnumerator * ParentEnum = this->GetEnumerator();

    while(ParentEnum->MoveNext())
    {
        tempCellRow++;
    }

    NewCellRow->SetIndex(tempCellRow);
    NewCellRow->Name = "Cell" + IntToStr(tempCellRow);
    NewCellRow->Top = (NewCellRow->Height) * (tempCellRow-9);
    NewCellRow->Left = 213;
    NewCellRow->OnClose = &DeleteCell;
}

void __fastcall TTreeTframe::DeleteCell(TObject *Sender)
{
    //this part deletes the cells when the delete button is pressed. As 
    //mentioned the red boxes themselves are also tframe, and in that 
    //tframe is a TEdit with a delete button. just so u know where the 
    //delete button is located

    TCells* TCurrent = NULL;
    int CellRow = 0;
    TCells* NewCellRow = (TCells*)Sender;

    CellRow = NewCellRow->GetIndex();
    NewCellRow->Name = "";
    TComponentEnumerator * ParentEnum = NewCellRow->Parent->GetEnumerator();

    while(ParentEnum->MoveNext())
    {
        TCurrent = (TCells*)ParentEnum->GetCurrent();
        if(TCurrent->GetIndex() > CellRow )
        {
            TCurrent->SetIndex(TCurrent->GetIndex() - 1);
            TCurrent->Top -= (NewCellRow->Height);
            TCurrent->Name = "DistIPCell" + IntToStr(TCurrent->GetIndex());
        }
    }
}
//---------------------------------------------------------------------------
void __fastcall TTreeTframe::btnAddCellsClick(TObject *Sender)
{
    // this is what the red + does
    AddCells();
}
//---------------------------------------------------------------------------
// the rest of this is for the propose of deleting this tframe from the tree structure
void __fastcall TTreeTframe::btnRemoveClick(TObject *Sender)
{
    if (FOnClose != NULL)
    {
        FOnClose(this);
    }

    PostMessage(Handle, CM_RELEASE, 0, 0);
}
//---------------------------------------------------------------------------
void __fastcall TTreeTframe::WndProc(TMessage &Message)
{
    if (Message.Msg == CM_RELEASE)
    {
        delete this;
        return;
    }

    TFrame::WndProc(Message);
}
//---------------------------------------------------------------------------
void __fastcall TTreeTframe::SetIndex(int TypeRow)
{
    this->TypeRow = TypeRow;
}

int __fastcall TTreeTframe::GetIndex()
{
    return this->TypeRow;
}
//---------------------------------------------------------------------------

解释这个有点棘手，所以如果你需要澄清，请告诉我，谢谢。

Answer 1

与任何其他用户界面控件一样，TFrame已发布可用的Width和Height属性，您可以在设计时和运行时设置这些属性。