[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

Canvas initialization..

Posted on 2000-02-15
10
Medium Priority
?
222 Views
Last Modified: 2010-04-04
does a canvas differ in initialization from D3 til D5 ?


Regards,

GOMF
0
Comment
Question by:GOMF
10 Comments
 
LVL 6

Expert Comment

by:Jaymol
ID: 2522908
Not in the slightest.

John.
0
 
LVL 5

Expert Comment

by:TheNeil
ID: 2523063
The canvas is the same. There are a couple of extra features at the bitmap level but nothing that will stop your code from compiling or working

The Neil
0
 

Author Comment

by:GOMF
ID: 2523067
lol, maybe i wanna elaborate on the subject a bit...
I moved a unit to D5 from D3 - and now I've got a problem..I've got 2 classes and the later inherits from the first

the first declaration
  TPreviewCanvas = Class(TObject)
  .....
  Public
    Procedure AnotherPage; Virtual;
  .....
 
The later class,

  TPrnCanvas = Class(TPreviewCanvas)
  ....
  Public
    Procedure AnotherPage; Override;
  ....

What happens in D5 when you run this ? Nothing the procedure Another does never execute, eventhough its called...any ideas ?



Regards,GOMF
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Expert Comment

by:garizpe
ID: 2523128
Ok... What happens with your programs i don´t have problems with D5
can you be more specific....
0
 

Author Comment

by:GOMF
ID: 2523142
garizpe,

Var
  vc : TPrnCanvas;
Begin
  With vc do
  Begin

    OnPageTop        := NIL; // executes
    OnPageBottom     := NIL; // executes
    AnotherPage;  // DOES NOT EXECUTE!!
    SetFontSize(20);
    Font.Style := [fsBold];
  End;


Really weird...!!

Regards,

GOMF
0
 
LVL 5

Accepted Solution

by:
TheNeil earned 400 total points
ID: 2523205
What is AnotherPage supposed to be doing? and why are you using vc without creating it first?

The Neil
0
 
LVL 12

Expert Comment

by:rwilson032697
ID: 2524654
Listening
0
 

Author Comment

by:GOMF
ID: 2525878
hehehe, yeah why try to create it before using it..lol...

*blush*

Regards,

GOMF
0
 
LVL 5

Expert Comment

by:TheNeil
ID: 2526159
I'll pretend that I actually proposed that as an answer rather than as a general stab in the dark. Thanks

The Neil
0
 

Author Comment

by:GOMF
ID: 2526261
hehehe, lol...

Regards,

GOMF
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
As many of you are aware about Scanpst.exe utility which is owned by Microsoft itself to repair inaccessible or damaged PST files, but the question is do you really think Scanpst.exe is capable to repair all sorts of PST related corruption issues?
Suggested Courses

872 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question