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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
////////////////////////////////////////////////////////////////////
// This little app checks to see if the specified envrionment
// variable exists, creating it if necessary. If the variable
// doesn't exist, the app prompts the user with the Browse for
// Folder dialog box then sets the envrionment variable, using the
// selected folder as the value.
//
// Example:
// C:\>CheckFolderVar maxr4dir "Select the folder where max is installed then click Ok."
//
////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <windows.h>
#include <shlobj.h>
#include <string>
////////////////////////////////////////////////////////////////////
std::string gCurrentValue;
// get window handle of cancel button so we can disable it.
BOOL CALLBACK EnumChildWindowsCallbackProc(HWND hwnd,LPARAM lParam)
{
char text[256];
GetWindowText(hwnd,text,256);
if (stricmp(text,"Cancel")==0)
{
*((HWND*)lParam) = hwnd;
return FALSE;
}
return TRUE;
}
int CALLBACK BrosweForFolderCallbackProc(HWND hwnd,UINT uMsg,LPARAM lp, LPARAM pData)
{
switch(uMsg)
{
case BFFM_INITIALIZED:
// disable cancel button
HWND hCancelBtn = NULL;
EnumChildWindows(hwnd,EnumChildWindowsCallbackProc,(LPARAM)&hCancelBtn);
EnableWindow(hCancelBtn,FALSE);
SendMessage(hwnd,BFFM_SETSELECTION,true,(LPARAM)gCurrentValue.data());
break;
}
return 0;
}
////////////////////////////////////////////////////////////////////
int main(int argc, char ** argv)
{
if (argc<2)
{
fprintf(stderr,"Usage: CheckFolderVar varname [-replace] [\"prompt msg\"]\n");
return EXIT_FAILURE;
}
// read cmdline
char ** args = argv;
char * varname = NULL;
bool replace = false;
char prompt[1024] = "";
for (int i=1; i<argc; i++)
{
if (!varname)
varname = args[i];
else if (stricmp(args[i],"-replace")==0)
replace = true;
else
sprintf(prompt,"%s",args[i]);
}
if (prompt[0] == '\0')
sprintf(prompt,"Set the '%s' environment variable by browsing to the desired folder and then click Ok:",varname);
// open registry key
HKEY hEnvKey;
RegOpenKeyEx(HKEY_CURRENT_USER,"Environment",0,KEY_WRITE|KEY_READ,&hEnvKey);
// check if var already exists
char value[MAX_PATH];
DWORD bufsz = MAX_PATH;
if(RegQueryValueEx(hEnvKey,varname,NULL,NULL,(LPBYTE)value,&bufsz) == ERROR_SUCCESS)
{
// exit if already exists and not replace
if (!replace)
{
RegCloseKey(hEnvKey);
return EXIT_SUCCESS;
}
gCurrentValue = value;
}
TryAgain:
// open browse for folder dialog
BROWSEINFO bInfo;
LPITEMIDLIST itemList;
LPMALLOC shMalloc;
memset( &bInfo, 0, sizeof( bInfo ) );
bInfo.hwndOwner = NULL;
bInfo.pidlRoot = NULL;
bInfo.lpszTitle = prompt;
bInfo.ulFlags = BIF_NEWDIALOGSTYLE;
bInfo.pszDisplayName = NULL;
bInfo.lpfn = BrosweForFolderCallbackProc;
itemList = SHBrowseForFolder(&bInfo);
if (!itemList)
goto TryAgain;
SHGetPathFromIDList(itemList,value);
SHGetMalloc(&shMalloc);
shMalloc->Free(itemList);
shMalloc->Release();
// set environment var
RegSetValueEx(hEnvKey,varname,0,REG_SZ,(const BYTE*)value,strlen(value));
// close registry key
RegCloseKey(hEnvKey);
// bubbye
return EXIT_SUCCESS;
}