Siemens SIMATIC HMI series System Manual

Note
"MB_SYSTEMMODAL" parameter
Execution of
a message box function with parameter "MB_SYSTEMMODAL" ensures that the
message box is displayed in the foreground. If this parameter is not specified, the message
box is hidden to users and (in the background) and cannot be operated. Mouse click events
outside the message box are written to a buffer and processed after you exit the message box.
Example: MessageBox(NULL, "Welt", "Hallo", MB_SYSTEMMODAL | MB_OK);
WinCC diagnosis
6.3 ApDiag Menu Commands
WinCC: General information and installation
180 System Manual, 02/2017, A5E40840020-AA

Siemens SIMATIC HMI series Specifications

General

Series	SIMATIC HMI
Category	Control Panel
Display Type	TFT LCD
Touch Screen	Yes (resistive or capacitive, depending on model)
Processor	Varies by model (e.g., ARM-based processors)
Storage	Varies by model (e.g., Flash memory, microSD card slot)
Communication Interfaces	Ethernet, USB
Protection Class	IP65 (front panel), depending on model
Operating Temperature	0 to 50°C, -20 to 60°C
Power Supply	24 V DC
Memory	128 MB, 256 MB