![]() This should be trivial to fix, but it's hard to suggest the exact solution without seeing the section code. This is also a reason why you see more blacks on mobile - because browser uses more smaller JPG images for narrow mobile screen. If you try to right-click this image and save it, it will be saved as a JPG.Īlso note that the biggest image is PNG, so if your original image is not too wide, browser will use this master PNG image and background will still be transparent. Hi all, Im following the LearnOpenGL tutorials and opted to use stbimage instead of SOIL. Note the format=pjpg parameter which instructs Shopify image engine to convert image to JPG. Struggling with png transparency via stbimage. This is when black background appears because JPGs do not support transparency - it's a part of the image and you can't fix it with CSS This seems to work great unless src is loaded from an image with transparencies (such as GIF) or an alpha channel (such as PNG). To implement responsive images they submit a set of smaller sources for each picture, however, for these smaller images they convert your original PNG to a JPG (which makes it load faster as JPGs are generally much smaller than PNGs). Void PNGDisplay_paint(object sender, e)Į.Graphics.CompositingQuality = .HighQuality Į.Graphics.DrawImage ( imgPNG, 0, 0, imgPNG.Width, imgPNG.This section looks like it was created by Axome developers and not a part of base Dawn. This.Paint += new (this.PNGDisplay_paint) 1 Answer Sorted by: 18 You need to enable blending for transparency to work: glEnable (GLBLEND) glBlendFunc (GLSRCALPHA, GLONEMINUSSRCALPHA) Also, you should check that the loaded PNG file contains an alpha channel. DO NOT EDIT IT MANUALLY! YOUR CHANGES ARE LIKELY TO BE LOST THIS METHOD IS MAINTAINED BY THE FORM DESIGNER The bitmap has transparancy, it just doesnt save with transparancy. ![]() ImgPNG = Image.FromFile("C \Documents and Settings\\JerBrand\\Desktop\\test.png") Im trying to save a Bitmap class that has transparancy as a png file with transparancy. This.SetStyle( ControlStyles.SupportsTransparentBackColor, true) This.SetStyle( ControlStyles.DoubleBuffer, true) This.SetStyle( ControlStyles.UserPaint, true) This.SetStyle( ControlStyles.AllPaintingInWmPaint, true) Void Form_load(object sender, System.EventArgs e) This.Load += new System.EventHandler(this.Form_load) Private PNGDisplay btnAdd = new PNGDisplay() Im trying to load a PNG file with a transparent background into an UIImageView (In case it matters, developing with Objective C, XCode 8.0, for IOS 10.0 target). I'm beginning to think I'm trying to achieve something just not possible.Here's what I get trying to draw on the UserControl (and in a picture box and all such):View image: Here's the PNG it's trying to draw (note IE won't show the actual alpha but you get the idea).View image: And here's the code:Ĭlass MainForm : Ugh, no such luck.Thought I'd give some code/screenshots of what's happening. This is pure speculation on my part, as I have no knowledge of whether this is a good idea or bad - much less if it's even possible.Any experts out there wanna give the clueless a clue? Bitmap b new Bitmap (Image.FromFile ('c:input2.jpg')) b.MakeTransparent (Color.White) b.Save ('c:output2.png', ImageFormat. Mat overlay cv::imread ('dice. ![]() The only idea I have is to somehow capture the appearance of the desktop window behind the control, and paint the form with this. You need to open the transparent png image using the flag IMREADUNCHANGED. Any suggestions? The app is a "sits on your desktop and pretends to be a part of the wallpaper" style. Also, try this: Create a form and set its background image (use a wallpaper or something) Add a panel to the form, and set its background to Transparent (it uses DrawThemeParentBackground to do this) Add your transparent PNG to the panel.the PNG will blend with the background. So I'm beginning to think I'm going about this the wrong way. Fine.However, I have these nice little png images, I want to place on that form as buttons, and maybe even place over the buttons to convey information.Only problem is, that where the png alpha (like in the edges of the drop-shadow) overlaps the form, I get a weird mix of the drop-shadow, and the transparency key.I've used a variety of means to try to get past this. 46.1k 16 124 177 asked at 3:26 jnm2 8,038 5 62 99 2 Im just trying to keep everything as small and fast as possible. Heh, After 4 hours of trying everything a newbie C# guy could think of, I'm begging for some help:Have a form, using either an image/color + transparency key, I have a transparent form. ![]()
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