Images (for developers)

Work in progress

This page has been marked as undergoing heavy editing by user Blu256. Please be patient.

Working with images is an important part of a graphical application, whether it's a simple application or a complex graphical suite. In TQt/TDE, this can be as simple as learning to use a few classes. This guide aims to be a good guide for developers who want to work with TQt/TDE.

Image classes

• TQPixmap ^API is one of the two basic image classes provided by TQt.

It is, essentially, a paint device, so it is optimized for drawing. You'll see this class used a lot (more than TQImage) because of this quality.

• TQImage ^API is the other basic image class.

According to the API docs, it is "a hardware-independent pixmap representation" and it is optimized for I/O operations and direct pixel access and manipulation.

• TQIconSet ^API is a helper class for icons.

Compared to the basic image classes, this class does not represent a single image, but a set of images which correspond to an icon. A folder icon can come in different sizes (a different image file corresponds to each size), but it is still considered to be the same icon.