能设置背景色，想画一个点，但guiengine不行啊？

发布于 2021-07-19 22:01:26 浏览：788 订阅该版

RT-Thread 4.0.2
gui_engine 2.1
例如我能设置背景色，想画一个点，但guiengine不行，我打断点进去看的，见图
![IMG_20210719_181104_edit_4045484266049.jpg](https://oss-club.rt-thread.org/uploads/20210719/1d2f59e48a4d8533b321e0e14d62e82d.jpg.webp)
依次调用的是
![IMG_20210719_180037_edit_5460528920520.jpg](https://oss-club.rt-thread.org/uploads/20210719/c101572727bfe41cb091e9291749af01.jpg.webp)
![IMG_20210719_180202_edit_4029437927509.jpg](https://oss-club.rt-thread.org/uploads/20210719/35dfc4d3bcc62f9a71aac68f1632988a.jpg.webp)
![IMG_20210719_181528_edit_4813625790931.jpg](https://oss-club.rt-thread.org/uploads/20210719/9e1883390297f293ce1244242c334faf.jpg.webp)
![IMG_20210719_181554_edit_5340406885122.jpg](https://oss-club.rt-thread.org/uploads/20210719/598c5262c4223e399c6fa56238642ec2.jpg.webp)
![IMG_20210719_181613_edit_5356815337723.jpg](https://oss-club.rt-thread.org/uploads/20210719/669f38fdb8df2b83a5b38f6da4701dce.jpg.webp)
下面两个结构体
![IMG_20210719_183044_edit_5486931217391.jpg](https://oss-club.rt-thread.org/uploads/20210719/4f9ea23f90455d4a09821336ffcd0a42.jpg.webp)
下面继续…

![IMG_20210719_185329_edit_5544767092382.jpg](https://oss-club.rt-thread.org/uploads/20210719/0f99b51fed81837b448eda219e7defc8.jpg.webp)
这两个结构体在这里关联上的
![IMG_20210719_184020_edit_6104950419380.jpg](https://oss-club.rt-thread.org/uploads/20210719/d95979571e57fbd00c36e38f4892998f.jpg.webp)
在初始化中调用该函数情况是
![IMG_20210719_185620_edit_6431511713601.jpg](https://oss-club.rt-thread.org/uploads/20210719/5f8e719e2e34f00e708a8311c9a7fb91.jpg.webp)
![IMG_20210719_190046_edit_6324583104242.jpg](https://oss-club.rt-thread.org/uploads/20210719/3b8af093eb8daa1683a5db8632344904.jpg.webp)
![IMG_20210719_191104_edit_6596982110972.jpg](https://oss-club.rt-thread.org/uploads/20210719/5c4a79eb4218f74a675c3835a9374f62.jpg.webp)
![IMG_20210719_191120_edit_6669874047940.jpg](https://oss-club.rt-thread.org/uploads/20210719/5621613318acca47ed0e8e3e8ecf94b8.jpg.webp)
其中framebuffer=0xc018000是由info结构体赋值的，info中的framebuf定义是在26行
![IMG_20210719_185941_edit_6822002577083.jpg](https://oss-club.rt-thread.org/uploads/20210719/8c3325f2adbdac877b693394bd6372a8.jpg.webp)
而且rtgui_graphic_set_device是在初始化rtgui_system_server_init之前做的，实在是没发现啥异常，请大神指教我往哪里查啊？