Pascal Syntax

pascal-syntax.md

Logical operators

• smaller: <
• greater: >
• equal: =
• not equal: <>

Variables

var
 index : Integer;

Type conversions

• StrToInt(), IntToStr(), RGBToColor(r, g, b)

Loading variables from Edit

• value := Edit1.Text

Common Lazarus Methods

• Reset image: Image1.Canvas.FillRect(Image1.ClientRect)
• Render ellipse on image: Image1.Canvas.Ellipse(x1, y2, x2, y2)
• Render rectangle on image: Image1.Canvas.Rectangle(x1, y2, x2, y2)
• Change font size: Image1.Canvas.Font.Height := size
• Change pen color: Image1.Canvas.Pen.Color := color
• Change font color: Image1.Canvas.Font.Color := color
• Change brush color: Image1.Canvas.Brush.Color := color
• Print out text on image: Image1.Canvas.TextOut(x, y, string)
• Change brush style: Image1.Canvas.Brush.Style := style

Functions

procedure shitMethod(SleepTime: LongInt);
begin
  // Your shit here
end;

Loops

Simple loop (i increases)

for i:=1 to 10 do
 begin
  // Your code here
 end;

While loop

while true do
 begin
  // Your code here
 end;

Useless decrease loop

for i:=9 downto 0 do
 begin
  // Your code here
 end;

Conditions

Simple Condition

if YourStatement then
  invokeYourMethod();

Standard Condition

if YourStatement then
begin
  // Your shit here
end;

Two-way Condition

if YourStatement then
begin
  // Your shit here
end
else
begin
  // Your shit here
end;