To create your program, you sometimes need appropriate images for example game characters. You may find copyright free image from internet.
But you can create images with some tools. Today, I'd like to introduce these tools for creating images.
This program is included in Windows and can create .png, .jpg, .bmp, and .gif format image files. I recommend you to use .png format. Because .png file is compact and can explain transparent. But Paint program doesn't have ability to use transparent color.
GIMP (GNU Image Manipulation Program) is a free program and manipulates many kind of image format. I always use this program for adding transparent color to the image made with Paint. Usage is listed below.
Today's third tool is a Microsoft Office program which has Drawing tool. I like PowerPoint best. With following steps you can create an image with transparent color.
[*] The PowerPoint screen shot above is a just sample. Actually, PowerPoint Online version doesn't have an ability to [Save As Picture]. So please use desktop version.