I'm drawing some graphics on a control area repeatedly, and each time I want to start fresh with a transparent background. So I use:
Graphics graph = control.CreateGraphics();
graph.Clear(Color.Transparent);
However, the graphics area seems to turn black instead of transparent. Any ideas?
C programming language is a machine-independent programming language that is mainly used to create many types of applications and operating systems such as Windows, and other complicated programs such as the Oracle database, Git, Python interpreter, and games and is considered a programming foundation in the process of ...
In the real sense it has no meaning or full form. It was developed by Dennis Ritchie and Ken Thompson at AT&T bell Lab. First, they used to call it as B language then later they made some improvement into it and renamed it as C and its superscript as C++ which was invented by Dr. Stroustroupe.
C is a general-purpose language that most programmers learn before moving on to more complex languages. From Unix and Windows to Tic Tac Toe and Photoshop, several of the most commonly used applications today have been built on C. It is easy to learn because: A simple syntax with only 32 keywords.
We write C for Carbon Because in some element the symbol of the element is taken form its first words and Co for Cobalt beacause in some elements the symbol of the element is taken from its first second letters, so that the we don't get confuse.
I found an alternate way to achieve what I need. I create a new transparent bitmap with the control's dimensions, draw my stuff on it and then use it as a background image for the control:
Bitmap bitmap = new Bitmap(control.Width, control.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
bitmap.MakeTransparent();
Graphics graph = Graphics.FromImage(bitmap);
// draw stuff here ...
control.BackgroundImage = bitmap;
graph.Dispose();
This works perfectly.
because picturebox has not transparency layer. you could be use transfer bitmap. try this.
tmp_bmp = new Bitmap(picturebox1.Width, picturebox1.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Graphics Canvas = Graphics.FromImage(tmp_bmp);
picturebox1.Image = tmp_Type;
Type_Canvas.Clear(Color.Transparent);
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