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by: James dean |
last post by:
I have heard that the video drivers in GDI+ are a big performance issue.
But is this only an issue with something like Games Programming i
think...is this wrong?. What about a drawing application just drawing
simple one dimensional shapes(Polygons,beziers,polylines etc...) are
these video drivers still useful for this?. If the video drivers are not
a problem then is there any other performance problems that would be
disastrous for a...
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by: news |
last post by:
This may be a stupid question, but if I don't ask I'll never know ;)
Ok, here it goes.... I am writing an application that renders an image in
one picturebox and a graph in another.
The image is drawn by loading a jpg into a bitmap and then setting
picturebox.image = mybitmap. Ive created my own class, inheriting from the
picturebox and overriding the OnPaint event so I can do e.Graphics.DrawImage
(this.image....). This renders...
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by: |
last post by:
We create VC++ programs that does some GDI drawing functionality.
I discovered GDI+ and this seems to be a big step forward, and appears to be
standard available in Windows XP and Windows Server 2003.
But since .NET also uses it, does that mean that it gets automatically
installed when I install a .NET framework on a Windows 2000?
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by: Phillip N Rounds |
last post by:
I have an application which is heavily graphics intensive, all the graphics
being custom.
Scattered throughout by app, I have
MyView->OnDraw( this->GetDC() );
Apparently, each call to this->GetDC() creates a GDI object and, 16,000 or
so calls to OnDraw() results in the Application hanging because it can no
longer create any new GDI objects ( I know, 16,384 )
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by: SStory |
last post by:
Question #1)
If I do Image.Save with the same filepath that I got the image from, it
bombs with "A generic error occurred in GDI+"
Any ideas? I prompt the user before overwriting, but if they want to do it,
I would like to offer the ability.
Question #2) I have my cropping working, using my own rubber banding
selector widget, but I am wondering how to best allow them to hold SHIFT and
maintain aspect ratio like Photoshop and others...
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by: Marcin Rzeznicki |
last post by:
Hello,
Do you think it is legitimate practice to mix GDI+ and GDI calls (via
Get/ReleaseHDC()) in paint event of a control? I've heard there is
possibility of performance loss while "locking" Graphics object which
is done as a side-effect to GetHDC() call - could you confirm? Another
question that comes to my mind when planning mentioned operation is: if
the control painted on uses double-buffering style, will GDI calls make
use of "back...
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by: Asfar |
last post by:
Hi,
Can I write a VC8 dll which used GDI+ and then use this dll in VC6.
I will be using GDI+ to basically load a image in memory and annotate it
with some text and save the image.
Any pointers on how I can do this?
Thanks,
-Asfar
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by: Pranil Kanderi |
last post by:
I have a huge application with lots of custom controls. The app had a
memory leak but fixed that by calling the dispose method where needed
and now the user objects are very stable, when I am looking at the task
manager. But the GDI handles keep growing. I narrowed it down to having
System.Drawing.Font in my custom controls.
To test it out:
I created a simple form with two buttons Add and Remove that - adds and
removes a simple textbox....
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by: jm |
last post by:
>From a C. Petzold book I have Programming Windows C#. It's a little
old now, but anyway, it has on page 71 (shortened):
form.Paint += new PaintEventHandler(MyPaintHandler);
static void MyPaintHandler(object objSender, PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
grfx.Clear(Color.Chocolate);
}
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by: Benosham |
last post by:
I have been playing around with trying to PInvoke GDI+ from C#, I made recently made the transition from C/C++ to C# and I really like the language, however being the old fashioned programmer I am I don't like the idea of the framework slowing down my applications with uncessesary safety checks. So I decided to try and PInvoke into GDI+ directly so tweak some extra performance out of an application I am writing. But every time I try I get an...
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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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: 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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