tags:

views:

64

answers:

0
Q: 

[iPhone SDK] Edit alpha of cgimage on touch

Hello, I have two uiimageview, i need to have the imageview transparent under the touch point..(with a circle)...to be able to see the image under the first one.. Can you share me some code or examples? Thanks!

related questions

Change alpha for an image hover in CSS2 standard?
UIView alpha problem
PNG8+Alpha from Fireworks (colormap) are different/smaller than from elsewhere (RGBA). Why?
How do I separate the colour and alpha blend functions in opengl?
Set alpha on radiobutton label
How to remove black background from textures in OpenGL
Capturing EAGLview content WITH alpha channel on iPhone
Using layered windows to create smooth window borders
How to programmatically detect if a bitmap has alpha channel ?
Looking for MsPaint alternative with alpha support
Inscriber Technology Via Builder and Delphi - Alpha Channel support
i want to capture a string through regex only when it contains any alphabetic characters?
Transparent top-level windows
"Screen" effect in Java 2D graphics
Non-working alpha in Flash Player 6 [Given Up On]
UITableView background image alpha problems
Simple transparency example not working in Java 3D
How do you draw transparent polygons with Python?
Alpha Software v 9
Set BufferedImage alpha mask in Java
What is the formula for alpha blending for a number of pixels?
How do I draw transparent DirectX content in a transparent window?
Does the VFW (Video For Windows) API support Alpha Channel Transparency?
How to use 32bit alpha-blended BMP in .Net
Can PNG image transparency be preserved when using PHP's GDlib imagecopyresampled?