我用Label1->Caption來抓Button的ModalResult可是得到的是數字，並不是mrOK或mrCancle之類的~~ 我的程式如下...

        float ChangeRate;
        SizeDlg->ShowModal();
        if(SizeDlg->OKBtn->ModalResult==1)//用這一行就沒有問題
        //if(SizeDlg->ShowModal()==mrOK)//原本用這個但是會出現錯誤
         {
                if(SizeDlg->RadioGroup1->ItemIndex==0)
                        ChangeRate=0.5;
                else if(SizeDlg->RadioGroup1->ItemIndex==1)
                        ChangeRate=0.75;
                else if(SizeDlg->RadioGroup1->ItemIndex==2)
                        ChangeRate=1.0;
                else if(SizeDlg->RadioGroup1->ItemIndex==3)
                        ChangeRate=1.25;
                else if(SizeDlg->RadioGroup1->ItemIndex==4)
                        ChangeRate=2.0;
                else if(SizeDlg->RadioGroup1->ItemIndex==5)
                        ChangeRate=4.0;
         }
         Image1->AutoSize=false;
         Image1->Stretch=true;
         Image1->Width=Image1->Picture->Bitmap->Width/ChangeRate;
         Image1->Height=Image1->Picture->Bitmap->Height/ChangeRate;

再請問要怎麼去得知TheBitmap->PixelFormat呢？ 我用了ShowMessage(TheBitmap->PixelFormat)和Label3->Caption=TheBitmap->PixelFormat來看，都也只是得到一個數字！比如我開啟BCB裡的256色圖片會得到3；16色會得到2…並不是pf8bit或pf4bit之類的…墾請先進幫忙解惑，謝謝!!

1.這是BCB線上說明，你有這樣設定嗎？

void __fastcall TOKRightDlg::OKBtnClick(TObject *Sender)    {
  ModalResult = mrOk;
}
void __fastcall TOKRightDlg::CancelBtnClick(TObject *Sender)
{
  ModalResult = mrCancel;    }    This code brings up the modal dialog from Form1 when a button is clicked.  It causes a Beep if the OK button is clicked.    void __fastcall TForm1::Button1Click(TObject *Sender)    {
  if (OKRightDlg->ShowModal() == mrOk)
    MessageBeep(0);
}

2.C語言的列舉應該知道吧～對照一下，就知道為何如此了！ enum TPixelFormat {pfDevice, pf1bit, pf4bit, pf8bit, pf15bit, pf16bit, pf24bit, pf32bit, pfCustom}; ----------------------- Practice makes perfect. 發表人 - stallion 於 2005/10/31 23:01:01

引言: 1.這是BCB線上說明，你有這樣設定嗎？

void __fastcall TOKRightDlg::OKBtnClick(TObject *Sender)    {
  ModalResult = mrOk;
}
void __fastcall TOKRightDlg::CancelBtnClick(TObject *Sender)
{
  ModalResult = mrCancel;    }    This code brings up the modal dialog from Form1 when a button is clicked.  It causes a Beep if the OK button is clicked.    void __fastcall TForm1::Button1Click(TObject *Sender)    {
  if (OKRightDlg->ShowModal() == mrOk)
    MessageBeep(0);
}

2.C語言的列舉應該知道吧～對照一下，就知道為何如此了！ enum TPixelFormat {pfDevice, pf1bit, pf4bit, pf8bit, pf15bit, pf16bit, pf24bit, pf32bit, pfCustom}; 我知道得到的2是對到pf4bit；3是pf8bit。 可否請問有辨法直接得到pf4bit或pf8bit嗎？謝謝 ----------------------- Practice makes perfect. 發表人 - stallion 於 2005/10/31 23:01:01

1.我有設了…但是還是一樣compiler的時候就錯了…