小弟剛學BCB 6的程式,可是有一些看不懂,想請各位大大幫忙.

//---------------------------------------------------------------------------
#include
#pragma hdrstop
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "trayicon"
#pragma link "CSPIN"
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
TCoolBar *pCoolBar = new TCoolBar(this);==========>一定要加this嗎?
//TCoolBand *vCoolBand = new TCoolBand();
TList *pList;
pCoolBar->Parent = this;-------------->表示pCoolBar是This的成員?
pCoolBar->Align = alTop;
pList = new TList();
try
{
TControl *pControl;
pControl = new TToolBar(pCoolBar);=================>表示要New一個pCoolBar的一樣大的記憶體嗎?
pList->Add(pControl);
pControl = new TButton(pCoolBar);
pList->Add(pControl);
pControl = new TCheckBox(pCoolBar);
pList->Add(pControl);
pControl = new TEdit(pCoolBar);
pList->Add(pControl);
pControl = new TButton(pCoolBar);
pList->Add(pControl);
AddBands(pCoolBar, pList);
}
catch (...)
{
ShowMessage("Some objects could not be added to Coolband");
}
delete pList;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::AddBands(TCoolBar *CoolBar, TList *Objects)
{
TControl *pCurrent;
for (int i = 0; i < Objects->Count; i )
{
pCurrent = (TControl *)Objects->Items[i];
// only add windowed controls to the coolbar
if (dynamic_cast(pCurrent) != NULL)
{
// Placing the control onto the CoolBar
// causes the TCoolBar object to create a TCoolBand
// and place the control within the band.
pCurrent->Parent = CoolBar;===================>建立一個CoolBand, 但是很長,如何修改到一般的長度?
//CoolBar->Bands[0].Items->FixedSize = true;
// Get the reference of the TCoolBand just created and assign text.
int j=CoolBar->Bands->Count - 1;
CoolBar->Bands->Items[j]->Text =
pCurrent->ClassName();
}
}
CoolBar->Height = 800;
ShowMessage(IntToStr(CoolBar->Height));
}

//---------------------------------------------------------------------------
#include
#pragma hdrstop
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "trayicon"
#pragma link "CSPIN"
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
//這邊的this指的是Form1
//而TCoolBar(TComponent *AOwner);參數指定owner，傳入this即Form1，由Form1管理此記憶體，Form1結束時會釋放此物件pCoolBar
TCoolBar *pCoolBar = new TCoolBar(this);
TList *pList;
pCoolBar->Parent = this; //Indicates the parent of the control. 將此物件顯示在哪個控制元件上
pCoolBar->Align = alTop;
pList = new TList();
try
{
TControl *pControl;
//TControl is the base class for all components that are visible at runtime.
//TControl是所有可視元件的基底類別，可以此new TButton等子類別物件裝在TControl裡
//此處pCoolBar同前段是TComponent *AOwner參數，在pCoolBar結束時會釋放掉這些owner是pCoolBar的物件
pControl = new TToolBar(pCoolBar);
pList->Add(pControl);
pControl = new TButton(pCoolBar);
pList->Add(pControl);
pControl = new TCheckBox(pCoolBar);
pList->Add(pControl);
pControl = new TEdit(pCoolBar);
pList->Add(pControl);
pControl = new TButton(pCoolBar);
pList->Add(pControl);
AddBands(pCoolBar, pList);
}
catch (...)
{
ShowMessage("Some objects could not be added to Coolband");
}
delete pList;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::AddBands(TCoolBar *CoolBar, TList *Objects)
{
TControl *pCurrent;
for (int i = 0; i < Objects->Count; i )
{
pCurrent = (TControl *)Objects->Items[i];
// only add windowed controls to the coolbar
if (dynamic_cast(pCurrent) != NULL)
{
// Placing the control onto the CoolBar
// causes the TCoolBar object to create a TCoolBand
// and place the control within the band.
pCurrent->Parent = CoolBar; // 同前段指定顯示在哪個控制元件上Placing the control onto the CoolBar
//CoolBar->Bands[0].Items->FixedSize = true;
// Get the reference of the TCoolBand just created and assign text.
int j=CoolBar->Bands->Count - 1;
CoolBar->Bands->Items[j]->Text =
pCurrent->ClassName();
}
}
CoolBar->Height = 800;
ShowMessage(IntToStr(CoolBar->Height));
}