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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- #include <stdint.h>
-
- /**
- * DGUSVPVariable.h
- *
- * Created on: Feb 9, 2019
- * Author: tobi
- */
-
- struct DGUS_VP_Variable {
- uint16_t VP;
- void* memadr; // If nullptr, the value cannot be uploaded to the display.
- uint8_t size;
-
- // Callback that will be called if the display modified the value.
- // nullptr makes it readonly for the display.
- void (*set_by_display_handler)(DGUS_VP_Variable &var, void *val_ptr);
- void (*send_to_display_handler)(DGUS_VP_Variable &var);
-
- template<typename T>
- DGUS_VP_Variable& operator =(T &o) {
- *(T*)memadr = o; // warning this is not typesafe.
- // TODO: Call out the display or mark as dirty for the next update.
- return *this;
- }
- };
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