Sometimes you need a better SavePicture() function. Not a lot better, just one that can save in some compressed format instead of just BMP format. Like JPEG usually, or PNG. Well this one does that, and throws in GIF as well though as usual (being based on GDI+) those tend to come out dithered and sort of crap in general.
What we have here is a simple preclared-instance Class with one method: SavePicture().
You give it a StdPiture, a file name (yes, it can save using Unicode paths), which format you want, and for JPEG you can add a "quality" in percent. It saves to disk, not to Byte arrays.
Nothing here people haven't seen before. This is just a "stripped to essentials" rendition of the well worn theme.
It only requires a version of Windows with IE 5 or later. It uses GDI+ but most systems with IE 5 or later cover that as well. In any case it should work on nearly anything you run anymore.
There are no 3rd party DLLs required, and not even any typelibs. Just add PicSave.cls to your Projects.
The attachment contains a simple demo. Its bulk is all source image data.
The StdPicture you pass to it must have a bitmap handle. In practical terms this means you may have to pass it the persistant-image property (.Image) if you have drawn your picture onto a Form, PictureBox, etc. and there is no provision for dealing with metafile vector images.
Notes:
New attachment incorporating feedback from discussion below to address issues encountered when GDI v. 1.1 is in play, running on 64-bit Windows, etc.
Also note that this makes no effort to handle transparency or alpha-channel translucency for GIF or PNG output. It saves simple "whole bitmap" images. If you load a picture with transparency into a StdPicture and save it back using this class the transparency is lost.
What we have here is a simple preclared-instance Class with one method: SavePicture().
You give it a StdPiture, a file name (yes, it can save using Unicode paths), which format you want, and for JPEG you can add a "quality" in percent. It saves to disk, not to Byte arrays.
Nothing here people haven't seen before. This is just a "stripped to essentials" rendition of the well worn theme.
It only requires a version of Windows with IE 5 or later. It uses GDI+ but most systems with IE 5 or later cover that as well. In any case it should work on nearly anything you run anymore.
There are no 3rd party DLLs required, and not even any typelibs. Just add PicSave.cls to your Projects.
The attachment contains a simple demo. Its bulk is all source image data.
The StdPicture you pass to it must have a bitmap handle. In practical terms this means you may have to pass it the persistant-image property (.Image) if you have drawn your picture onto a Form, PictureBox, etc. and there is no provision for dealing with metafile vector images.
Notes:
New attachment incorporating feedback from discussion below to address issues encountered when GDI v. 1.1 is in play, running on 64-bit Windows, etc.
Also note that this makes no effort to handle transparency or alpha-channel translucency for GIF or PNG output. It saves simple "whole bitmap" images. If you load a picture with transparency into a StdPicture and save it back using this class the transparency is lost.
