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Errors - Print-Form.
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Author
Topic: Errors - Print-Form. (Read 4360 times)
seghele0
Full Member
Posts: 173
Errors - Print-Form.
«
on:
December 20, 2021, 03:43:12 pm »
Found the code on Google for printing the Form.
Can someone help me to resolve the errors?
Code: Pascal
[Select]
[+]
[-]
unit
Unit1
;
{$mode objfpc}{$H+}
interface
uses
Windows
,
Classes
,
SysUtils
,
Forms
,
Controls
,
Graphics
,
Dialogs
,
ExtCtrls
,
Buttons
,
Printers
;
type
{ TForm1 }
TForm1
=
class
(
TForm
)
Panel1
:
TPanel
;
SpeedButton1
:
TSpeedButton
;
procedure
SpeedButton1Click
(
Sender
:
TObject
)
;
private
public
end
;
var
Form1
:
TForm1
;
implementation
{$R *.lfm}
{ TForm1 }
procedure
TForm1
.
SpeedButton1Click
(
Sender
:
TObject
)
;
var
MyPrinter
:
TPrinter
;
myBitMap
:
TBitMap
;
begin
myBitMap
:
=
TBitMap
.
Create
;
myBitMap
.
Height
:
=
form1
.
Height
;
form1
.
BorderStyle
:
=
bsNone
;
form1
.
PaintTo
(
myBitMap
.
Canvas
,
0
,
0
)
;
form1
.
BorderStyle
:
=
bsSingle
;
MyPrinter
:
=
Printer
;
MyPrinter
.
BeginDoc
;
myPrinter
.
Canvas
.
CopyRect
(
Classes
.
Rect
(
0
,
0
,
RoundToInt
(
myPrinter
.
PaperSize
.
Width
/
2
)
,
RoundToInt
(
myPrinter
.
PaperSize
.
Height
/
2
)
)
,
myBitMap
.
Canvas
,
Classes
.
Rect
(
0
,
0
,
myBitMap
.
Width
,
myBitMap
.
Height
)
)
;
MyPrinter
.
EndDoc
;
myBitMap
.
Free
;
end
;
end
.
The errors:
Code: Pascal
[Select]
[+]
[-]
Compile Project
,
Target
:
project1
.
exe
:
Exit code
1
,
Errors
:
2
unit1
.
pas
(
46
,
11
)
Error
:
Identifier
not
found "RoundToInt"
unit1
.
pas
(
47
,
11
)
Error
:
Identifier
not
found "RoundToInt"
Logged
VisualLab
Sr. Member
Posts: 321
Re: Errors - Print-Form.
«
Reply #1 on:
December 20, 2021, 04:12:32 pm »
"Round" instead "RoundToInt".
Logged
seghele0
Full Member
Posts: 173
Re: Errors - Print-Form.
«
Reply #2 on:
December 20, 2021, 04:49:29 pm »
Thank you for the info.
Compiling is OK, but still ERROR after running the program.
Logged
winni
Hero Member
Posts: 3197
Re: Errors - Print-Form.
«
Reply #3 on:
December 20, 2021, 04:56:19 pm »
Hi!
The Lazarus printing trap:
The compiler does not complain, but you need the unit
Printer4Lazarus
for printing.
PS.: Fastet gun in the west: Jamie
Winni
Logged
seghele0
Full Member
Posts: 173
Re: Errors - Print-Form.
«
Reply #4 on:
December 20, 2021, 05:55:51 pm »
I've add Printer4Lazarus in the Project inspector.
Compiling is still OK.
After "run", the printer works, but only a blank page.
???
Logged
VisualLab
Sr. Member
Posts: 321
Re: Errors - Print-Form.
«
Reply #5 on:
December 20, 2021, 05:59:54 pm »
The code is missing an instruction to specify the width of the printed bitmap. Add:
Code: Pascal
[Select]
[+]
[-]
LMyBitmap
.
Width
:
=
Form1
.
Width
;
Logged
seghele0
Full Member
Posts: 173
Re: Errors - Print-Form.
«
Reply #6 on:
December 20, 2021, 06:07:58 pm »
THANK YOU.
Logged
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Errors - Print-Form.
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