all groups > dotnet drawing api > december 2006
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Make edges smooth after cliping.
Posted by danila.benhur NO[at]SPAM gmail.com at 12/30/2006 2:26:12 AM
Greeting!
I'm using the following code.
// Create graphics path represented by rectangle with rounded angles
GraphicsPath roundedRectangle = this.GetRoundedRectPath(rect, 13);
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
// Set clipping regi... more >>
call two page crystalreports in VB
Posted by r a at 12/30/2006 2:02:30 AM
In Vb.6 I use CrystalReports For reporting
How Can I Call The two page crystalreports in Vb6
by sequencly.
if you know please reply for me
thanks aghazadeh.
*** Sent via Developersdex http://www.developersdex.com ***... more >>
How to register COM component in C#?
Posted by Bill Gates at 12/25/2006 12:00:00 AM
Rotating a portion of a graphics object
Posted by Jeff at 12/21/2006 6:12:48 AM
I'm rendering several controls on the graphics object of a form. I
need to rotate one of the controls 90 degrees. My searches so far seem
to point to the use of a matrix, a region, the Transform property, and
the RotateTransform method. However, apparently I'm not using the
correct combinatio... more >>
Most common GDI+ question
Posted by Michael C at 12/21/2006 12:00:00 AM
On Bob Powell's website (which seems to be the central reference around
here) it states that the number 1 most common question asked in this group
is "why doesn't what I draw on a form stay there". I vote that the number 1
question is actually "why is GDI+ so slow". :-) What does everyone thin... more >>
Zoom to center of UserControl in C# using GDI+
Posted by dcopestake NO[at]SPAM gmail.com at 12/18/2006 3:17:56 PM
Hi,
I'm currently trying to write a custom UserControl which (essentially)
is a drawing canvas and allows zooming and panning.
The functionality I'm trying to implement relates to zooming. I've
currently implemented something along the lines of Bob Powell's example
at http://www.bobpowell.n... more >>
Out of memory when BitBlt
Posted by mayanc at 12/18/2006 10:56:05 AM
Hi,
I'm using this code in order to draw to a non-client area in a windows
control.
After a while I'm experiencing a slow down. If I continue using the
control, I get an "Out of memory" exception in the WndProc method.
Does anyone can see the problem?
I will appreciate any help!
The Cod... more >>
Can't load TIF files generated from a scan or Office mdi documents
Posted by JuanPablo Jofre at 12/16/2006 4:41:01 PM
Hi,
I'm trying to load images either generated from my scanner or exported from
an office mdi document using different lines of code and all of the return
the same exception: System.ArgumentException. I know the file is OK because I
can open with any installed viewers on my PC (IE, ImageVie... more >>
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Explorer preview
Posted by Fabio Z at 12/14/2006 2:13:42 PM
How can I make to let the windows explorer show the thumbnail of an image
file saved in a my format?
To explain, I would like to obtain the thumbnail in the explorer as
Paint.Net do with its pdn files.
Thanks.
... more >>
When to use CreateGraphics, FromHdc and FromHwnd
Posted by Frederik Vanderhaegen at 12/14/2006 12:00:00 AM
Hi,
I'm a newbie when it comes to working with GDI+ and I'm stuck on how I've to
create my graphics object.
So far as I know, there are 3 methods
(this.CreateGraphics(),Graphics.FromHdc, Graphics.FromHwnd).
But can somebody tell me what the difference is between these methods and
when to ... more >>
Vector Drawing Program
Posted by Darrell Sparti, MCSD at 12/13/2006 9:44:39 AM
I'm creating a vector drawing program. The user can drag shapes onto
the drawing area. When the user clicks a shape, selection points
appear at each corner and at the midway points of a surrounding
rectangle. There's also a rotation selection point that, when the user
places the mouse over th... more >>
Capturing a window's image
Posted by Nayan at 12/13/2006 1:12:31 AM
Hi,
I have a small question...
"If i put the window out of visible area of the screen (the window is
still active and in front) can i capture the window's shot correctly?"
The thread is being continued from
http://groups-beta.google.com/group/microsoft.public.dotnet.languages.cshar=
p/br... more >>
sRGB - scRGB
Posted by Martin Stainsby at 12/12/2006 6:12:18 PM
As an example.
Color col = Color.FromArgb(255, 240, 94, 143);
Evaluates to.
A = 255
R = 240
G = 94
B = 143
ScA = 1.0
ScR = 0.8713671
ScG = 0.111932427
ScB = 0.2746773
How does R 240 become ScR 0.8713671 ?
There must be a calculation for this conversion, Has anyone figured it ou... more >>
Onpaint in class derived from Control
Posted by Sanchez at 12/12/2006 2:56:22 PM
Hello,
i create a class, this class inherits from Control
but the method OnPaint is never Execute...
Contrariwise, if inherits from Panel or PictureBox
the method is execute.... Why...? ... more >>
Diagonal Control
Posted by Sanchez at 12/9/2006 12:59:22 AM
Hi, i need a diagonal control.... a kind of Picturebox diagonal, or
Panel or Button, I must work with a control, not mage....
It's possible?
Thanks... more >>
Find the resolution of images
Posted by Subbu at 12/8/2006 12:58:13 AM
To check the resolution of images is 300 DPI or not I using this code.
Is this correct way to find the resolution of images?
Dim MyImage As System.Drawing.Image = Nothing
MyImage = System.Drawing.Image.FromFile(ImageFile)
Dim sf As SizeF = New SizeF(CSng(MyImage.Width) /
MyImage.HorizontalR... more >>
About "Creating transparent Windows Forms controls" - test.JPG (0/1)
Posted by Sanchez at 12/8/2006 12:37:28 AM
Hello, Bob help me! :)
i tried your code but the graphic obscures the PictureBox control...
Can you help me please? :)
This is my code:
Your class:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;... more >>
Combine transformations?
Posted by Fabio Z at 12/7/2006 12:00:00 AM
Hi all!
Ok, I'll try to explain :)
Let's say I have a well known transformation (let's say rotation of 10°, but
can also be a translation or something).
I have 2 Graphics (g1 and g2) of wich I don't know if they have some
transformations set and transformations done on g1 can be differe... more >>
Object is currently in use elsewhere
Posted by andreas.skaar NO[at]SPAM gmail.com at 12/6/2006 5:39:53 AM
Hi,
Im getting this exception:
Object is currently in use elsewhere.
StackTrace:
at System.Drawing.Graphics.CheckErrorStatus(Int32 status)
at System.Drawing.Graphics.DrawLine(Pen pen, Int32 x1, Int32 y1,
Int32 x2, Int32 y2)
does anyone have any ideas on what is wrong or how to check... more >>
Render graphics to Form, or to PictureBox.Image?
Posted by Jeff at 12/5/2006 5:19:40 AM
I'm developing an application where I need to draw potentially very
large graphics. I've toyed with a couple of different approaches, and
I wanted to find out from the experts which approach is the "right" way
to do it:
1) Render directly to the Form. The problem with this is that it
requir... more >>
Set 'Transparent Background Color' On System.Drawing.Image Object?
Posted by A_StClaire_ NO[at]SPAM hotmail.com at 12/4/2006 3:05:59 PM
hi,
suppose I have a .gif with a cyan-colored background. I'd like this
..gif to appear as if it had a transparent background. using Visual
Studio 2005, is there any property of the Image object I can set to
facilitate this?
something like...
image.transparentBackgroundColor = System... more >>
Render using DashPattern is very very slow
Posted by Patrick van Dijk at 12/1/2006 6:41:21 AM
Take a look at the following sample code....the part which renders
using a DashPattern is very very slow.
The same rendering using a Solid pen is hundreds of times faster.
Anyone, any idea why?
using System;
using System.Collections;
using System.Drawing;
using System.Drawing.Drawing2D;
... more >>
Need help on calculating Resolution of image
Posted by Subbu at 12/1/2006 1:33:37 AM
I have a situation when user uploads image with lower resolution (less
than or greater than 300 DPI), I need to warn him message, to do that I
need to calculate resolution of uploaded image for which I am facing
problem. Can anyone please give me some code to find the resolution of
image or link... more >>
Working with indexed bitmaps
Posted by Jeff Johnson at 12/1/2006 12:19:51 AM
I have a need to load a PNG that is 8bpp indexed, overlay half of the
graphic with another PNG that is 8bpp indexed, and then save the new image
to a file, again as 8bpp indexed. The .NET implementation of GDI+ seems to
dislike indexed graphics (in the sense that it makes it so damn difficult ... more >>
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