Информатика

Ellipse. Bu ellipsni chizadi, to`g`ri burchakli to`rt burchak kabi. 
RoundRect. Aniq chegaralangan to`g`ri burchakli to`rt burchak chizadi. 
Pixels. Ikki o`lchovli massiv bo`lib piksellar ranggini saqlaydi. Birinchi 
o`lchov - X, ikkinchisi - Y.
Draw. Berilgan nuqtada (X,Y) TGraphic ob`yektini chiqarish. TGraphic – 
abstract (barcha virtual metodlar bilan) sinf. Uni dasturda to`g`ridan to`g`ri 
foydalanib bo`lmaydi. U meroslari - TBitmap, TIcon, TMetaFile. Bularning 
barchasiga rasmlar, ikonkalar, metafayllar kiradi va - .bmp, .ico, .wmf, .emf. 
TJPEGImage nomi sinf ham mavjudki, JPEG formatli rasmlarni ko`rsatadi. 
StretchDraw. Bu ham xuddi Draw kabi, faqat bu rasmlarni TRect 
yordamida avtomatik masshtabga keltiradi. Masalan,

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314 
Canvas->StretchDraw(TRect(0,0,40,40),MyGraphic); 
CopyRect. Bir sohani nusxalash.
CopyMode. Nusxalash usuli. Xuddi Mode xossasiga o`xshash.
Yuqoridagi funksiya va usullardan foydalanib biz C++ Builderda ixtiyoriy 
grafikni hosil qilishimiz mumkin. Masalan, 
ning garafigini chizish. 
6.6-listing. 
ning garafigini chizish. 
Canvas->MoveTo(15,15); 
Canvas->Pen->Color=RGB(255,255,0); 
for(int i=0;i<30;i++) { 
Canvas->LineTo(i*10,(i*i)*10);} 
Rangli quyosh 
Canvas->MoveTo(ClientWidth/2,ClientHeight/2); 
Canvas->Pen->Color=RGB(random(255),random(255),random(255)); 
Canvas->LineTo(random(ClientWidth),random(ClientHeight)); 
To`g`ri burchakli to`rtburchak. 
Canvas->Rectangle(50,50,150,150); 
Fon o`rnatish 
Canvas->Brush->Style=bsCross; 
TRect tRect(0,0,100,100); 
Canvas->FillRect(tRect); 
Fonli ellips 
Canvas->Brush->Style=bsDiagCross; 
Canvas->Pen->Color = clBlue; 
Canvas->Pen->Mode=pmNotCopy; 
Canvas->Ellipse(0,0,500,500); 
Matn chiqarish 
AnsiString vasS="Matn"; 

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315 
Canvas->Font->Color=clRed; 
Canvas->Font->Size=50; 
Canvas->TextOutA(50,50,vasS); 
Besh yulduz 
TPoint tPoints[6]; 
Canvas->Pen->Color = clRed; 
Canvas->Pen->Width=3; 
tPoints[0].x = 40; 
tPoints[0].y = 10; 
tPoints[1].x = 20; 
tPoints[1].y = 60; 
tPoints[2].x = 70; 
tPoints[2].y = 30; 
tPoints[3].x = 10; 
tPoints[3].y = 30; 
tPoints[4].x = 60; 
tPoints[4].y = 60; 
tPoints[5].x = 40; 
tPoints[5].y = 10; 
Canvas->Polyline(tPoints,5); 
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