因為程式需要，需要三個Form

Form1中有一個button，按下去後會new一個Form2。

Form2中有一個button和一個Chart1(已新增Series1)，button按下去後會new一個Form3。

Form3中有一個button，按下去會執行以下程式碼，讓Form2的Chart1畫出曲線。

[code cpp]
Form2->Series1->Clear();
double x[]={16089.5,7229.52,2164.46,1162.03,594.625,469.154,343.412,209.334,109.61,25.1017,15.9098,12.6282,11.6456,11.6108,11.5529};
double y[]={0.016504,0.018908,0.022796,0.025194,0.028605,0.030802,0.035502,0.05181,0.113023,1.46059,4.27525,10.6317,46.4719,130.692,594.579};
for(int i=0;i<15;i )
Form2->Series1->AddXY(x[i],y[i],"",clRed);
[/code]

問題就是

Form2中的Chart1不會顯示曲線，請問這是什麼原因，謝謝各位

以下是詳細的程式碼

Unit1.cpp
[code cpp]
#include "Unit1.h"
#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
TForm2 *Form2;
Form2 = new TForm2(Application);
Form2->Show();
}
[/code]

Unit2.cpp
[code cpp]
#include "Unit2.h"
#include "Unit3.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "Chart"
#pragma link "Series"
#pragma link "TeEngine"
#pragma link "TeeProcs"
#pragma resource "*.dfm"
TForm2 *Form2;
//---------------------------------------------------------------------------
__fastcall TForm2::TForm2(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm2::Button1Click(TObject *Sender)
{
TForm3 *Form3;
Form3 = new TForm3(this);
Form3->Show();
}
[/code]

Unit3.cpp
[code cpp]
#include "Unit3.h"
#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm3 *Form3;
//---------------------------------------------------------------------------
__fastcall TForm3::TForm3(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm3::Button1Click(TObject *Sender)
{
Form2->Series1->Clear();
double x[]={16089.5,7229.52,2164.46,1162.03,594.625,469.154,343.412,209.334,109.61,25.1017,15.9098,12.6282,11.6456,11.6108,11.5529};
double y[]={0.016504,0.018908,0.022796,0.025194,0.028605,0.030802,0.035502,0.05181,0.113023,1.46059,4.27525,10.6317,46.4719,130.692,594.579};
for(int i=0;i<15;i )
Form2->Series1->AddXY(x[i],y[i],"",clRed);
}
[/code]

抱歉，看到VCL就貼了這一篇...

我的內容是BCB，刪不掉了...

你將 form2 動態建立方式改成如此
TForm2 *F2 = new TForm2(Application);
Form2=F2;
Form2->Show();
可參考以下連結
http://delphi.ktop.com.tw/board.php?cid=168&fid=913&tid=35093

------
Just Do It
-------------------------
其實男生不是真的喜歡你不減肥，而是喜歡你愛吃還不肥；也不是真的喜歡你不化妝，而是喜歡你素顏也好看；也不是真的喜歡你瘦，而是喜歡你瘦卻有胸；也不是真喜歡你獨立，而是他忙的時候別煩他。女孩子，太認真你就輸了。

編輯記錄

感謝你，我終於有點了解動態產生的Form了