Laboratoriya ishi №: 8 C++ Builderda uslub va xodisalar

Form1
RadioButton1
Caption	Harorat konvertori...		Caption	Selsiy
Heigth	240		Left	40
Width	357		Top	24
			Checked	True
RadioButton2			Label1
Caption	Farengeyt		Caption	Haroratni kiriting:
Left	200		Left	40
Top	24		Top	64
Checked	False
Edit1			Button1
Text	0		Caption	Hisoblash
Left	154		Left	96
Top	61		Top	104
Button2			Label2
Caption	Tozalash		Caption	Natija:
Left	177		Left	48
Top	104		Top	151
Label3
Caption
Left	96
Top	151

Yuqorida keltirilgan ishlarni bajarganimizdan so`ng 22.2 – rasmdagi ko`rinishga kelamiz.

22.2 – rasm: Formadagi ob’yektlarnifoydalanuvchiga tushunarli ko`rinishi.

Formadagi Hisoblash tugmasi bosilganida (OnClick) xodisasiga listing 22.1 ni yozamiz. Bu listingni OnClick xodisasiga yozishimiz uchun quyidagi ketma – ketlikni amalga oshiramiz. Object Inspector oynasidagi Events bo`limiga o`tamiz, keltirilgan xodisalarning ichidan OnClick xodisasini topamiz va sichqonchaning chap tugmasini uning ustida 2 marta chertamiz yoki Hisoblash tugmasi ustida sichqonchaning chap tugmasini uning ustida 2 marta chertamiz:

Listing 22.1:

void __fastcall TForm1::Button1Click(TObject *Sender)

{

float ts, tf;

if (RadioButton1->Checked) {

ts = StrToFloat(Edit1->Text);

tf = 9.0/5 * ts + 32;

Label3->Caption = FloatToStr(tf) + " F";

}

if (RadioButton2->Checked) {

tf = StrToFloat(Edit1->Text);

ts = 5.0/9 * (tf - 32);

Label3->Caption = FloatToStr(ts) + " C";

}

}

Formadagi Tozalash tugmasi bosilganida (OnClick) xodisasiga quyidagi listing yozamiz:

Listing 22.2:

void __fastcall TForm1::Button2Click(TObject *Sender)

{

RadioButton1->Checked = true;

Edit1->Text = "0";

Label3->Caption = "";

Button1->SetFocus();

}
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