QT Draw Pixmap # QT Creator # Radar

Create Pixmap 

Step 1.
Create View
create view

check the width and height

Step 2.
Calculate Diameter and Center Point

Step 3.
Create Qt Project choose widget

Step 4. 
Create RadarScene


Step 5.
prepare RadarScene.h file

use QWidget

prepare function and parameter

Step 6.
prepare RadarScene.cpp file, Calculate diameter and center point

Step 7.
when called update() will execute paintEvent

Step 8.
paint Scene use Pixmap

return Pixmap

Step 9. 
Create Timer to update View use timeout() signal

View like this



Google Play Console 2022 上架資訊,審核通過時間

[ 教學 ] 如何使用 Sourcetree 對 Github 進行版本控制 #Mac OS 版本控制

2021申請 Android Developer 開發者帳號及上架步驟