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by: Kenneth McDonald |
last post by:
Warning: this post may display my utter ignorance of image file format
facts.
As part of a photo album program I'm working on, I'd like to be able
to work with the metadata in JPEG files, which I understand are
really JFIF files holding jpg data. Do any Python modules permit
me to do this? I looked at PIL, but it seemed to operatre at a
higher level, i.e. hiding the file-level implementation details.
At the least I'd like to be able...
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by: Kristian Nybo |
last post by:
Hi,
I'm writing a simple image file exporter as part of a school project. To
implement my image format of choice I need to work with big-endian
bytes, where 'byte' of course means '8 bits', not 'sizeof(char)'. It
seems that I could use bitset<8> to represent a byte in my code --- if
you have a better suggestion, I welcome it --- but that still leaves me
with the question of how to write those bitsets to an image file as
big-endian bytes...
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by: jingalls |
last post by:
I'm trying to modify a form so that when a user clicks a checkbox for a
shorter version of the form, it will replace swap the default (long)
form elements with the short version of elements, so that only the
version that is selected will have its element values passed on to the
next page.
Currently I have two div areas set up with ids as such:
<script>
javascript..
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by: Segfahlt |
last post by:
I have a fairly simple C# program that just needs to open up a fixed width
file, convert each record to tab delimited and append a field to the end of
it.
The input files are between 300M and 600M. I've tried every memory
conservation trick I know in my conversion program, and a bunch I picked up
from reading some of the MSDN C# blogs, but still my program ends up using
hundreds and hundreds of megs of ram. It is also taking...
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by: Tom Rowton |
last post by:
This one has me a bit confused and I'm not finding what I
need in the MSDN or by searching these forums, so here
goes...
I have a rather large, complex code-in-page WebForm
(don't ask) and a section of that Form is 4 or 5
ASP:Panels pretending to be a set of Tabs, each with its
own section of the form.
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by: Charlie King |
last post by:
in brief:
Can I perform operations like imagesx() or getimagesize() on raw image
data as retrieved into a variable from a database, without first
saving it as a file? If so, how? If not, what is the best way to
create a temporary file such that it is unlikely to conflict with
other sessions that are performing the same actions?
in more detail:
I have a database that stores an image in a BLOB field, and I want to
display that image on...
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by: Ido Flatow |
last post by:
Hi all,
I've been exploring the way I can manipulate WSDL.exe using
SchemaImporterExtension in order to create a proxy to my liking.
My situation is as follows - I have a web site that has multiple asmx files,
some of them share the same data types (the famous "Order" example).
What I want is this final result:
- A class file that holds all the proxy classes, but no data types
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by: felixnielsen |
last post by:
If im not mistaken, a char variable allocates 1 byte of memory, as it
is the case with a bool variable.
I need 2 bool and 1 char variable which only need to contain a value
between 0 and 63 (times 256^3 :O)
When you consider that it makes it makes perfect sence with bit
manipulation, in case you dont understand what i mean let me give an
example.
to store a value between 0 and 63 you need only 6 bits. Lets say we
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by: Stephen Cattaneo |
last post by:
Hi all,
I am relatively new to socket programming. I am attempting to use raw
sockets to spoof my IP address. From what I can tell I will have to
build from the Ethernet layer on up. This is fine, but I am having
some trouble with manipulating my hex values.
Seems to me that there are two ways to store hex values:
1. as literal hex - 0x55aa
2. as a string - "\x55aa"
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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