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.NET Forum / Windows Forms / Drawing / June 2007

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ThreadLast Post  Replies
Displaying a palette01 Jul 2007 00:27 GMT2
Getting a palette from the clipboard I'd like to display it.
Is there code available that does this?
I've been Googling without success.
thanks
resizing image defect - strange border appears28 Jun 2007 12:21 GMT1
Hi. I am implementing a code that takes an image of arbitrary size,
then crops it to proprotion and resizes the result to some set
thumbnail size.
The problem is, when the image is resized there's a visible darker
are   (*.JPG; *.JPEG; *.JPE)  the same exact file types28 Jun 2007 00:47 GMT2
What does it mean when a program's SaveAs file save dialog box contains
JPEG(*.JPG; *.JPEG; *.JPE)
Are they all names for the exact same thing?
For example, Photoshop lets you select the above but you never get a chance
How to create a thumbnail without reading the whole jpeg file27 Jun 2007 19:48 GMT2
Is there a way to read a jpeg partially to construct a smaller sized
image?
For example if I have a 1000x1000pixel jpeg, i want to read only every
tenth pixel to create a 100x100 preview thumbnail. Is this possible?
Using Image.FromFile,  I need img's resolution to agree with the file's27 Jun 2007 01:15 GMT10
I run:
Dim img As Image = Image.FromFile(mFullPath)
img has a resolution of 96 but mFullPath (a JPEG) has a resolution of 72
(used Photoshop to find the file's resolution)
Encoder Parameters questions26 Jun 2007 13:25 GMT2
In Photoshop one can save a jpg file after specifying: "Quality" and a
Format Option("Baseline Standard", "Baseline Optimized" or "Progressive")
At his site Bob Powell shows how to specify jpg "Quality" in DotNET.
1) Is it possible to specify "Format Options" for a jpg file?
How to create a bitmap with the same resolution and size as the Image object23 Jun 2007 02:53 GMT1
What I want is to create a bitmap with the same resolution and size as the
Image object.
I tried:
Dim bm As Bitmap = New Bitmap(img.Width, img.Height,
luminance value for Red, Green and Blue22 Jun 2007 18:24 GMT2
Bob Powell's site says:
The effective luminance value for red is 0.3086. Green has an effective
luminance of 0.6094 and the value for blue is 0.082
I've seen the values: 0.299, 0.587, 0.114
Reading animated GIF files22 Jun 2007 18:22 GMT8
Bob Powell's site advises that one can not create animated GIF files using
GDI+ image encoders.
What about reading them into Bitmaps. Is that possible?
Practical?
are *.JPG; *.JPEG; *.JPE names for the same thing22 Jun 2007 09:39 GMT1
What does it mean when a program's SaveAs file save dialog contains
JPEG(*.JPG; *.JPEG; *.JPE)
Are they all names for the exact same thing?
Thanks
Low Quality text in System.Drawing20 Jun 2007 19:53 GMT2
I'm working in a image generator, using C# with ASP.NET 2.0.
I'm generate some imagens in disk , in my machine everything works ,
but when i put the application in a server prodution , the text don't
have the same highquality.
PrintDocument output enlargement problem20 Jun 2007 06:32 GMT2
I am rendering a reporting service report and using the PrintDocument class
to print the resulting byte array. I set the defaultpagesettings to the
printer defaultpagesettings (this is all done in asn asp.net application).
When printing on our development SBS server  this prints ...
how to drawimage with rotation20 Jun 2007 01:28 GMT2
Say we have a bitmap 100x100
and a Graphics object go containing a rotation of 45 degrees and the
appropriate translation
If we want the picture to be unchanged but rotated
Deallocating memory of a Bitmap created with a pointer to image bits18 Jun 2007 12:43 GMT6
As described in the article KB814675
http://support.microsoft.com/?scid=kb%3Ben-us%3B814675&x=9&y=17
"When a Bitmap object is created with a pointer to image bits, the new
object may or may not use the memory at that address as backing for
User Control with transparent background flicker problem.18 Jun 2007 01:58 GMT6
I'm trying to create a custom control with a transparent background.
I am using Bob Powell's excellent example
Creating transparent Windows Forms controls.
http://www.bobpowell.net/transcontrols.htm
Pages: 1 2 3 May, 2007
 
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