Solved

Amount of used resources.

Posted on 1998-12-21
2
136 Views
Last Modified: 2010-04-04
Hi there,

Does anybodyknow any technique (or maybe solution or something) on how to reduce amount of resources (System/GDI) used by application or component?  
Once again, I do not leak resources, everything being freed nicely when app is closed but amount of resources being used wkile app's working is quite big (and when running on Windows95/98 is big dangerously). Thanks.

p.s. I dont have much windowed controls created. It is rather bitmaps (GDI resources).
0
Comment
Question by:_art_
2 Comments
 
LVL 12

Accepted Solution

by:
rwilson032697 earned 100 total points
ID: 1352351
_art_,

There are a couple of very effective things you can do:

1. Make sure you don't autocreate all your forms in the DPR (this is a real killer). Instead create the form where you need it (ie: just shift that line of code that creates the form from the DPR to the appropriate place in the code) and Release them as soon as you have done with them.

2. If after doing 1 above you are still having problems because of the bitmaps then you may need to look at some sort of caching strategy (delphi uses a number of caches to preserve GDI system resources - such as fonts and brushes) or a strategy that involves grabbing at least some of the bitmaps off disk only at the time you need them.

Cheers,

Raymond.
0
 
LVL 20

Expert Comment

by:Madshi
ID: 1352352
Raymond is right with the autocreation of forms.

About bitmaps: You should use TImageList (or something like that) instead of using single Bitmaps. Because each and every TBitmap (respectively TImage) consumes one handle, while all the images in one imageList comsume all together only one handle. And since the kind of resources you're talking about is in reality the percent of free handles, that's very important.

Regards, Madshi.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
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…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

821 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