1e41f4b71Sopenharmony_ci# LayerAlpha 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci定义图层Alpha信息的结构体。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**起始版本：** 3.2 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**相关模块：**[Display](_display_v10.md) 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci## 汇总 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci### Public 属性 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci| 名称 | 描述 | 19e41f4b71Sopenharmony_ci| -------- | -------- | 20e41f4b71Sopenharmony_ci| boolean [enGlobalAlpha](#englobalalpha) | 全局Alpha使能标志 | 21e41f4b71Sopenharmony_ci| boolean [enPixelAlpha](#enpixelalpha) | 像素Alpha使能标志 | 22e41f4b71Sopenharmony_ci| unsigned char [alpha0](#alpha0) | Alpha0值，取值范围：[0, 255]。 | 23e41f4b71Sopenharmony_ci| unsigned char [alpha1](#alpha1) | Alpha1值，取值范围：[0, 255]。 | 24e41f4b71Sopenharmony_ci| unsigned char [gAlpha](#galpha) | 全局Alpha值，取值范围：[0, 255]。 | 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci## 类成员变量说明 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci### alpha0 31e41f4b71Sopenharmony_ci 32e41f4b71Sopenharmony_ci``` 33e41f4b71Sopenharmony_ciunsigned char LayerAlpha::alpha0 34e41f4b71Sopenharmony_ci``` 35e41f4b71Sopenharmony_ci**描述** 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ciAlpha0值，取值范围：[0, 255]。 38e41f4b71Sopenharmony_ci 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ci### alpha1 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci``` 43e41f4b71Sopenharmony_ciunsigned char LayerAlpha::alpha1 44e41f4b71Sopenharmony_ci``` 45e41f4b71Sopenharmony_ci**描述** 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ciAlpha1值，取值范围：[0, 255]。 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ci 50e41f4b71Sopenharmony_ci### enGlobalAlpha 51e41f4b71Sopenharmony_ci 52e41f4b71Sopenharmony_ci``` 53e41f4b71Sopenharmony_ciboolean LayerAlpha::enGlobalAlpha 54e41f4b71Sopenharmony_ci``` 55e41f4b71Sopenharmony_ci**描述** 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ci全局Alpha使能标志 58e41f4b71Sopenharmony_ci 59e41f4b71Sopenharmony_ci 60e41f4b71Sopenharmony_ci### enPixelAlpha 61e41f4b71Sopenharmony_ci 62e41f4b71Sopenharmony_ci``` 63e41f4b71Sopenharmony_ciboolean LayerAlpha::enPixelAlpha 64e41f4b71Sopenharmony_ci``` 65e41f4b71Sopenharmony_ci**描述** 66e41f4b71Sopenharmony_ci 67e41f4b71Sopenharmony_ci像素Alpha使能标志 68e41f4b71Sopenharmony_ci 69e41f4b71Sopenharmony_ci 70e41f4b71Sopenharmony_ci### gAlpha 71e41f4b71Sopenharmony_ci 72e41f4b71Sopenharmony_ci``` 73e41f4b71Sopenharmony_ciunsigned char LayerAlpha::gAlpha 74e41f4b71Sopenharmony_ci``` 75e41f4b71Sopenharmony_ci**描述** 76e41f4b71Sopenharmony_ci 77e41f4b71Sopenharmony_ci全局Alpha值，取值范围：[0, 255]。 78