Iam using this code to generate bitmap from string. Now i need to convert this bitmap into ICO or icon and below method is not working it causes error when i use System.Drawing.Imaging.ImageFormat.Icon error is Null Refrence Exception. and if i use any other format that error resolved and new error arise in m_notifyIcon that cannot use this as image. what to do...
System.Drawing.Bitmap bmp = TextToBitmap("This");//return bitmap
MemoryStream ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Icon);
BitmapImage imgg = new BitmapImage();
imgg.BeginInit();
imgg.StreamSource = new MemoryStream(ms.ToArray());
imgg.EndInit();
//img.Source = imgg;
Icon io = new System.Drawing.Icon(ms);
m_notifyIcon.Icon = io;
Got answer to my question.
System.Drawing.Bitmap bmp = TextToBitmap("String");
System.IntPtr ich = bmp.GetHicon();
System.Drawing.Icon io = System.Drawing.Icon.FromHandle(ich);
m_notifyIcon.Icon = io;
get Bitmap iamge use IntPtr and use the above code...
Related
I load a bitmap from a DataStream. I try to return the loaded bitmap from a method, and later use it as a source to clone a new bitmap. Unfortunately, the Clone() call results in an OutOfMemoryException. Through testing I realized that Clone() succeeds until the underlying data stream is disposed.
How can I create a bitmap that exists independent from the stream it was loaded from?
DxScreenCapture cap = new DxScreenCapture();
var surface = cap.CaptureScreen();
Bitmap png;
Rectangle rect;
PixelFormat fmt;
using (DataStream stream = Surface.ToStream(surface, ImageFileFormat.Bmp))
{
png = new Bitmap(stream);
fmt = png.PixelFormat;
rect = new Rectangle(911, 170, 32, 14);
// Works
Bitmap rgn1 = png.Clone(rect, fmt);
}
// Throws OutOfMemoryException
Bitmap rgn2 = png.Clone(rect, fmt);
Building on Hans' comment, I simply created a new bitmap from the original one.
Bitmap copy;
using (DataStream stream = Surface.ToStream(surface, ImageFileFormat.Bmp))
{
Bitmap orig = new Bitmap(stream);
copy = new Bitmap(orig);
}
// Able to use copy after stream is disposed
I do have some problems to display an image (uEye-Cam) in a wpf-Image form. The displayed image is completely white. Below is my used code:
//Get Cam Bitmap Image
var cam = new uEye.Camera();
cam.Init();
cam.Memory.Allocate();
cam.Acquisition.Capture(uEye.Defines.DeviceParameter.DontWait);
Int32 s32MemId;
cam.Memory.GetActive(out s32MemId);
cam.Memory.Lock(s32MemId);
Bitmap bitmap;
cam.Memory.ToBitmap(s32MemId, out bitmap);
//WPF Image control
var image1 = new System.Windows.Controls.Image();
//convert System.Drawing.Image to WPF image
var bmp = new System.Drawing.Bitmap(bitmap);
IntPtr hBitmap = bmp.GetHbitmap();
System.Windows.Media.ImageSource wpfBitmap = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
image1.Source = wpfBitmap;
image1.Stretch = System.Windows.Media.Stretch.UniformToFill;
image1.Visibility = Visibility.Visible;
DeleteObject(hBitmap);
Is there anything wrong with the image1 properties maybe or..?
Thanks
WPF bitmap to image conversion shows a black image only
I've had good results with converting every new frame to a bitmap as in the question:
Bitmap bmp;
cam.Memory.ToBitmap(s32MemId, out bmp);
And then converting this to a BitmapImage using:
BitmapImage bitmapImage = null;
using (System.IO.MemoryStream memory = new System.IO.MemoryStream())
{
bitmapImage = new BitmapImage();
bmp.Save(memory, System.Drawing.Imaging.ImageFormat.Bmp);
memory.Position = 0;
bitmapImage.BeginInit();
bitmapImage.StreamSource = memory;
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
bitmapImage.EndInit();
}
And then locking and freezing (as in How do you pass a BitmapImage from a background thread to the UI thread in WPF?) the BitmapImage to set it as the source of the Image control using:
Object tempLock = new Object();
BitmapImage lastBitmapImage = null;
lock (tempLock)
{
lastBitmapImage = bitmapImage.Clone();
}
lastBitmapImage.Freeze();
Finally, the BitmapImage is set as the souce of the Image control with:
this.Dispatcher.Invoke(new Action(() =>
{
imageDisplay.Source = lastBitmapImage;
}));
I have this code (C#):
unsafe private Bitmap Test()
{
Bitmap test = null;
byte[] data = memRenderAll.CurrentData;
fixed (byte* m_pBuffer = _data)
{
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
Bitmap a = new Bitmap(720, 576, 2160, System.Drawing.Imaging.PixelFormat.Format24bppRgb, new IntPtr(m_pBuffer));
a.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
test =(Bitmap) Image.FromStream(ms);
a.Dispose();
}
}
return _test;
}
By saving the stream as this:
a.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
I get a 10:1 reduction is size.
Is there a way of avoiding this:
a.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
and specifying it somewhere/somehow in:
Bitmap a = new Bitmap(720, 576, 2160, System.Drawing.Imaging.PixelFormat.Format24bppRgb, new IntPtr(m_pBuffer));
as I would like to create the Bitmap only once.
thanks,
Andrew
I think its impossible todo in one code line using standard System.Drawing.
You use that constructor: http://msdn.microsoft.com/en-us/library/zy1a2d14(v=vs.110).aspx
Your code:
new Bitmap(720, 576, 2160, System.Drawing.Imaging.PixelFormat.Format24bppRgb, new IntPtr(m_pBuffer));
What does it mean? Bitmap read memory pointed by m_pBuffer using fixed width, height, stride and pixel format. You can't read it as jpeg, because jpeg - image zipping fomat. Look on it: http://en.wikipedia.org/wiki/JPEG#JPEG_codec_example . Jpeg codec need all your image for ziping, it can't zip parts and join them after.
My .png image is stored on a Uri object and it has the following format
"pack://application:,,,/AppName.Modules.App.Shared;component/Images/AppName_logo.png"
How do I load this image onto a System.Drawing.Bitmap object?
Assuming you are using WPF, you can first load the image as a BitmapImage and then convert it.
See this answer to "Converting BitmapImage to Bitmap and vice versa"
BitmapImage bi = new BitmapImage(
new Uri("pack://application:,,,/AppName.Modules.App.Shared;component/Images/AppName_logo.png"));
Bitmap b = BitmapImage2Bitmap(bi);
private Bitmap BitmapImage2Bitmap(BitmapImage bitmapImage)
{
using (MemoryStream outStream = new MemoryStream())
{
BitmapEncoder enc = new BmpBitmapEncoder();
enc.Frames.Add(BitmapFrame.Create(bitmapImage));
enc.Save(outStream);
System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(outStream);
return new Bitmap(bitmap);
}
}
I'm trying to save an Image to SQL Server so SSRS can read it. I need to convert to WriteableBitmap (and possibly JPEG?) so I can make changes to the image size before saving. However, when I try to pull the converted image out of SQL Server, it will not render in SSRS at all. What am I doing wrong?
byte[] m_Bytes = ReadToEnd(fileStream); //this works fine
WriteableBitmap bmp1 = new WriteableBitmap(166, 166);
bmp1.FromByteArray(m_Bytes); //this works fine
ExtendedImage image = bmp1.ToImage();
MemoryStream stream = new MemoryStream();
ImageTools.IO.Encoders.AddEncoder<JpegEncoder>();
JpegEncoder encoder = new JpegEncoder();
encoder.Encode(image, stream);
BitmapImage img = new BitmapImage();
img.SetSource(stream);
WriteableBitmap bmp2 = new WriteableBitmap(img);
byte[] buffer1 = bmp2.ToByteArray();
CurrentOrder.CompanyImage = buffer1; //this does save a byte array but it will not render in SSRS. If I set buffer1 to bmp1.ToByteArray() then it works fine but I am still unable to resize it using the resize method in WriteableEx without it not rendering in SSRS.
This is another try at the same thing and it won't render either:
And this is simpler and won't work either:
byte[] m_Bytes = ReadToEnd(fileStream);
WriteableBitmap bmp1 = new WriteableBitmap(166, 166);
bmp1.FromByteArray(m_Bytes);
WriteableBitmap resizedImage = bmp1.Resize(25, 25, WriteableBitmapExtensions.Interpolation.Bilinear);
byte[] buffer1 = resizedImage.ToByteArray();
CurrentOrder.CompanyImage = buffer1;
What you want is to resize 166x166 (or 25x25), export as byte[] and reload picture from this byte array ?
Can you try with BitmapImage ?
BitmapImage image = new BitmapImage();
image.SetSource(fileStream);
WriteableBitmap bitmap = new WriteableBitmap(image);
WriteableBitmap resizedBitmap = bitmap.Resize(25, 25, WriteableBitmapExtensions.Interpolation.Bilinear);
CurrentOrder.CompanyImage = resizedBitmap.ToByteArray();