added wxGetProcessId()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15814 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/function.tex

@@ -114,6 +114,7 @@ the corresponding topic.
 \helpref{wxGetPrinterPreviewCommand}{wxgetprinterpreviewcommand}\\
 \helpref{wxGetPrinterScaling}{wxgetprinterscaling}\\
 \helpref{wxGetPrinterTranslation}{wxgetprintertranslation}\\
+\helpref{wxGetProcessId}{wxgetprocessid}\\
 \helpref{wxGetResource}{wxgetresource}\\
 \helpref{wxGetSingleChoiceData}{wxgetsinglechoicedata}\\
 \helpref{wxGetSingleChoiceIndex}{wxgetsinglechoiceindex}\\
@@ -584,6 +585,18 @@ enum wxKillError
 
 <wx/utils.h>
 
+\membersection{::wxGetProcessId}\label{wxgetprocessid}
+
+\func{unsigned long}{wxGetProcessId}{\void}
+
+Returns the number uniquely identifying the current process in the system.
+
+If an error occurs, $0$ is returned.
+
+\wxheading{Include files}
+
+<wx/utils.h>
+
 \membersection{::wxShell}\label{wxshell}
 
 \func{bool}{wxShell}{\param{const wxString\& }{command = NULL}}