A must be declared manually because they are in a combined relationship with the parent class. When they are combined with the parent class, each subclass needs to be declared separately in the dimension of the object. Since , need to be declared separately, many parameters need to be entered. Do not use this method unless necessary. Here, multiple coordinate axes can only be declared multiple and cannot be declared separately. Therefore, the code logic is as follows: The logic of the core framework of the drawing tool is sorted out. The logic of the core framework of the drawing tool is sorted out.
Here, the code (), no coordinate information can lebanon mobile number be entered in the brackets because each object is independent of each other and has no effect on each other. You can also enter any array. The distinction between two objects is achieved by the variable name. From the figure, one value corresponds to two values, which shows that this is the superposition of two functions. This method of access is very complicated. Do not use object access directly unless necessary. This is just a demonstration. 6. Multiple-image layout There are two ways to position multiple images Absolute position positioning: Use the actual position coordinates to position the image Relative position positioning: Use arrays to automatically divide the image into rows and columns of the same size Positioning according to the position of the rows and columns.
Absolute coordinate layout method define the exact position, the distance from the left border, the distance from the bottom border, the width, and the height. It needs to be passed as an explicit parameter during initialization. Drawing tool core framework logic combing Drawing tool core framework logic combing. Absolute coordinate layout method practice Drawing tool core framework logic combing Drawing tool core framework logic combing. Relative coordinate layout method Description The same canvas can be divided into multiple modules for painting separately.