Predefined symbolic constants
Operating system used
The following Boolean constant determines which operating system is used. That can be used for example in a script ... if (_UNIX) ...
| Constant | Description |
|---|---|
_UNIX |
For Linux systems TRUE, for Windows FALSE. |
| _WIN32 | For Windows systems TRUE, for Linux FALSE. |
Directory paths, version and current project
Absolute paths can be queried with the CTRL function getPath(). The following string constants address directories:
| Constant | Description |
|---|---|
PROJ_PATH |
Path to the project directory as defined in the file config in the directory PVSS_II. Points to the project-specific resources. CAUTION: the drive character is always uppercase. |
PVSS_PATH |
Path to the WinCC OA installation directory as also defined in the config file. CAUTION: the drive character is always uppercase. |
WINCCOA_PATH |
Identical to PVSS_PATH (see above). Path to the WinCC OA installation directory as also defined in the config file. CAUTION: the drive character is always uppercase. |
PVSS_BIN_PATH |
The PVSS_BIN_PATH constant contains the path in the WinCC OA binary directory. It is created from the WinCC OA path in the config file and "/bin/" or "/bin/". If WinCC OA programs are to be started by a control script, this should be done with system(PVSS_BIN_PATH + "WCCILxxxxx" respectively "WCCOAxxxxx"). This assures that there will not be any version conflicts if the directory is not in the current path. |
DATA_PATH |
Path to the DATA directory for the current project. The variable DATA_PATH leads to project-specific data. |
VERSION |
The constant VERSION contains the WinCC OA version as a string, for example "3.0". |
VERSION_DISP |
The new control constant VERSION_DISP shows not only the version but also the service pack number. |
VERSION_NUMERIC |
Contains the WinCC OA version in numerical form, for example 309000 for the WinCC OA version 3.9. |
PROJ |
The constant PROJ contains the current WinCC OA project (a manager runs actual with this project) as a string, for example "Testproj_de_en". Is available in CTRL and UI. |
__FILE__ |
During run-time, the constant is replaced with the name of the file (or library) in which the constant is called. |
__FUNCTION__ |
During run-time, the constant is replaced with the name of the function in which the constant is called. |
__LINE__ |
During run-time, the constant is replaced with the value of the current line number. |
Standard input/output, standard error output
Use the following expressions for the function fprintf() and other functions with the data type file. Note that the result depends on your system.
| Constant | Description |
|---|---|
stdin |
Standard input |
stdout |
Standard output |
stderr |
Standard error output |
Borderstyles
| Constant | Value | Description |
|---|---|---|
BS_NONE |
0 | No border |
BS_3D |
1 | 3D border |
BS_SUNKEN |
2 | Sunken border |
BS_RAISED |
4 | Raised border |
BS_STYLED |
8 | Styled border using CSS |
