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Published on 2010-04-21T11:01:15Z
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I need to change the DPI of the System.Drawing.Bitmap object from the default value = 96 to e.g. 150. I couldn't find the answer how to do that so I ask here :)
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I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:…
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Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to…
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The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions…
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I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot…
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Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test…
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I am using gdi+ for image format checking.
It is really surprising that gdi+
Image img(path);
does not throw exception when a device is removed.
for example, I am checking a list of image files on a removable device.
I plug the disk off,
Then My Application will crashed.
How can I avoid such problem…
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just in pure gdi
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From the documentation of Image.FromHbitmap() at http://msdn.microsoft.com/en-us/library/k061we7x%28VS.80%29.aspx :
The FromHbitmap method makes a copy of the GDI bitmap; so you can release the incoming GDI bitmap using the GDIDeleteObject method immediately after creating the new Image.
This…
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I need help setting a transparent image to the clipboard. I keep getting "handle is invalid". Basically, I need a "second set of eyes" to look over the following code. (The complete working project at ftp://missico.net/ImageVisualizer.zip.)
This is an image Debug Visualizer class library, but I made…
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I have a Format32bppArgb backbuffer, where I draw some lines:
var g = Graphics.FromImage(bitmap);
g.Clear(Color.FromArgb(0));
var rnd = new Random();
for (int i = 0; i < 5000; i++) {
int x1 = rnd.Next(ClientRectangle.Left, ClientRectangle.Right);
int y1 = rnd.Next(ClientRectangle.Top,…
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