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update CRT environment block in wxSetEnv() too

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60728 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2009-05-24 15:33:33 +00:00
parent 5508feb8f7
commit 787de19a13
4 changed files with 66 additions and 21 deletions
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30
interface/wx/utils.h
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@@ -169,8 +169,9 @@ void wxInfoMessageBox(wxWindow parent = NULL);
wxChar* wxGetenv(const wxString& var);
/**
Returns the current value of the environment variable @c var in @c value.
@c value may be @NULL if you just want to know if the variable exists and
Returns the current value of the environment variable @a var in @a value.
@a value may be @NULL if you just want to know if the variable exists and
are not interested in its value.
Returns @true if the variable exists, @false otherwise.
@@ -180,10 +181,24 @@ wxChar* wxGetenv(const wxString& var);
bool wxGetEnv(const wxString& var, wxString* value);
/**
Sets the value of the environment variable @c var (adding it if necessary)
to @c value.
Sets the value of the environment variable @a var (adding it if necessary)
to @a value.
Returns @true on success.
Notice that under Windows platforms the program may have two different
environment blocks: the first one is that of a Windows process and is
always present, but the CRT may maintain its own independent copy of the
environment. wxSetEnv() will always update the first copy, which means that
wxGetEnv(), which uses it directly, will always return the expected value
after this call. But wxSetEnv() only updates the second copy for some
compilers/CRT implementations (currently only MSVC) and so using wxGetenv()
(notice the difference in case) may not return the updated value.
@param var
The environment variable to be set, must not contain @c '=' character.
@param value
New value of the variable.
@return
@true on success or @false if changing the value failed.
@see wxUnsetEnv()
@@ -192,8 +207,9 @@ bool wxGetEnv(const wxString& var, wxString* value);
bool wxSetEnv(const wxString& var, const wxString& value);
/**
Removes the variable @c var from the environment. wxGetEnv() will return
@NULL after the call to this function.
Removes the variable @a var from the environment.
wxGetEnv() will return @NULL after the call to this function.
Returns @true on success.