Reference/Call

Call

function_name | :label_name | user_var(input)

Calls the function named function_name, the label named label_name, or a variable that specifies an address. An address is returned by GetCurrentAddress, GetFunctionAddress or GetLabelAddress. A call returns when it encounters a Return instruction. Sections and functions are automatically ended with a Return instruction. Uninstall functions cannot be called from installer functions and sections, and vice-versa.

Function func
  Call :label
  DetailPrint "#1: This will only appear 1 time."
label:
  DetailPrint "#2: This will appear before and after message #1."
  Call :.global_label
FunctionEnd
 
Section
  Call func
  Return
 
.global_label:
  DetailPrint "#3: The global label was called"
SectionEnd

Command introduced with NSIS v1.3