I want to save my created image as a PNG or JPEG file with the help of GDI+ but i can't find a way to do this. Seems that there is no way to create a non file based Image and fill it with a bitblit from the HBITMAP.
Or do i miss something?
Use the Bitmap::FromHBITMAP() method. Then just Save() it.
Related
I am trying to just change the resolution of a tiff image using Bit Miracle libtiff. Below is the code snippet. When I do this, tiff image resolution is changed, but the other tiff parameters are gone and I am unable to open the tiff file. Could you please help if I am doing something wrong here?
using (Tiff image = Tiff.Open(fileName, "a"))
{
image.SetField(TiffTag.XRESOLUTION, 200);
image.SetField(TiffTag.YRESOLUTION, 300);
image.WriteDirectory();
}
Please note that changing TiffTag.XRESOLUTION or TiffTag.YRESOLUTION won't change image data and will only change the way the data is interpreted by viewers or printers.
As for the code itself, you should:
Call SetDirectory(0) before calling SetField methods. That's because you open file in append mode.
Use RewriteDirectory instead of WriteDirectory. Otherwise you might corrupt image data.
Can you post example code,
to show how to CreateIcon() from Gdiplus::Bitmap?
I want to convert png, jpg, bmp to icon in memory
You can do that with the Gdiplus::Bitmap::GetHICON() method.
Remember to free the icon with DestroyIcon() when you're done with it.
I'm new in programming a Win32 program. I want to display a tif image in the window, but I only found ways to display bitmap image. Does anyone got idea about how to display a tif image? Thanks.
Use Gdiplus::Bitmap class to load TIFF image. Then, get HBITMAP from it by calling GetHBITMAP.
I want to resize bmp images in codeigniter. How do i do that. Codeigniter image manipulation class resizes only images of type jpg,png and gif....Please help some one
Make sure you have the gd module installed for php. Then either extend the CI image manipulation class to work with bmp images or just resize them directly in the controller. Either way, you will need to familiarize yourself with the gd functions:
http://us.php.net/manual/en/book.image.php
Check out Timthumb, it's a much better solution to resize images than CI's built in functions, which are a little confusing.
I've got a handle to a BITMAP structure (HBITMAP) in a Windows Mobile application -- I'd like to save the bitmap as a PNG file, using the IImage interface if possible. (There's no BMP file in this situation, the BITMAP is only in memory).
It looks like I could use IImagingFactory's IImagingFactory::CreateImageEncoderToFile method to save the file but I think I'd first have to get the BITMAP converted into "IImage" format.
Any ideas on how to do this with native code?
Use CreateImageFromStream to read in your BITMAP data, that gives you an IImage.
Edit:
I did a little more research on this. There are a couple paths, but I think the easiest is to:
create a DIBSECTION and blit your bitmap to it.
Create a BitmapData instance pointing to the DIBSECTION for the image data.
Call CreateBitmapFromBuffer to generate an IBitmapImage interface
Push the IBitmapImage (which is an IImage) through your encoder.