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/* Add entries to the GNU Emacs Program Manager folder.
Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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 2, or (at your option) any later
version.
GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* addpm: Adds entries to the GNU Emacs Program Manager folder.
argv[1] = full path to program to execute
argv[2] = full path to icon for emacs (optional)
*/
#include <windows.h> // required for all Windows applications
#include <ddeml.h> // required for DDEML
#include <string.h> // required for strcpy and strlen
HDDEDATA EXPENTRY dde_callback (WORD, WORD, HCONV, HSZ, HSZ, HDDEDATA, DWORD, DWORD);
BOOL send_shell_command (DWORD, LPSTR);
// Global variables
HANDLE gh_inst; // current instance
/****************************************************************************
FUNCTION: WinMain()
PURPOSE: Calls initialization function, processes message loop
PARAMETERS:
HANDLE h_instance
HANDLE h_prev_instance
LPSTR lp_cmd_line
int n_cmd_show
RETURNS:
int
****************************************************************************/
int PASCAL
WinMain (HANDLE h_instance, // current instance
HANDLE h_prev_instance, // previous instance
LPSTR lp_cmd_line, // command line
int n_cmd_show) // show-window type (open/icon)
{
DWORD id_inst = 0L; // instance identifier
FARPROC lp_dde_proc;
char *path, *icon, *s;
char additem[MAX_PATH*2 + 100];
gh_inst = h_instance;
for (path = NULL, s = lp_cmd_line; *s && isspace (*s); s++);
if (*s)
{
path = s;
while (*s && !isspace (*s))
s++;
if (*s)
*(s++) = '\0';
}
for (icon = NULL; *s && isspace (*s); s++);
if (*s)
{
icon = s;
while (*s && !isspace (*s))
s++;
if (*s)
*(s++) = '\0';
}
lp_dde_proc = MakeProcInstance ((FARPROC) dde_callback, gh_inst);
DdeInitialize (&id_inst, // receives instance ID
(PFNCALLBACK) lp_dde_proc, // address of callback function
APPCMD_CLIENTONLY, // this is a client app
0L); // reserved
send_shell_command (id_inst, (LPSTR) "[CreateGroup(Gnu Emacs)]");
send_shell_command (id_inst, (LPSTR) "[ReplaceItem(Emacs)]");
sprintf (additem, "[AddItem(%s,Emacs%c%s)]",
path, (icon ? ',' : ' '), (icon ? icon : ""));
send_shell_command (id_inst, additem);
DdeUninitialize (id_inst);
return (0);
}
/****************************************************************************
FUNCTION: dde_callback()
PURPOSE: Processes messages for DDEML conversation
PARAMETERS:
WORD w_type
WORD w_fmt
HCONV h_conv
HSZ hsz1
HSZ hsz2
HDDEDATA h_data
DWORD dw_data1
DWORD dw_data2
RETURNS:
HDDEDATA
****************************************************************************/
HDDEDATA EXPENTRY
dde_callback (WORD w_type, // transaction type
WORD w_fmt, // clipboard format
HCONV h_conv, // handle of the conversation
HSZ hsz1, // handle of a string
HSZ hsz2, // handle of a string
HDDEDATA h_data, // handle of a global memory object
DWORD dw_data1, // transaction-specific data
DWORD dw_data2) // transaction-specific data
{
// Nothing need be done here...
return (HDDEDATA) NULL;
}
/****************************************************************************
FUNCTION: send_shell_command()
PURPOSE: Sends the given command string to Program Manager
PARAMETERS:
LPSTR - pointer to command string
RETURNS:
BOOL - TRUE if this function succeeds, FALSE otherwise
****************************************************************************/
BOOL
send_shell_command (DWORD id_inst, // instance identifier
LPSTR lp_command) // command string to execute
{
HSZ hsz_serv_top; // Service and Topic name are "PROGMAN"
HCONV hconv; // handle of conversation
int n_len; // length of command string
HDDEDATA h_data; // return value of DdeClientTransaction
DWORD dw_result; // result of transaction
BOOL b_result = FALSE; // TRUE if this function is successful
// create string handle to service/topic
hsz_serv_top = DdeCreateStringHandle (id_inst, "PROGMAN", CP_WINANSI);
// attempt to start conversation with server app
if ((hconv = DdeConnect (id_inst, hsz_serv_top, hsz_serv_top, NULL))
!= (HCONV) NULL)
{
// get length of the command string
n_len = lstrlen ((LPSTR) lp_command);
// send command to server app
h_data = DdeClientTransaction ((LPBYTE) lp_command, // data to pass
n_len + 1, // length of data
hconv, // handle of conversation
(HCONV) NULL, // handle of name-string
CF_TEXT, // clipboard format
XTYP_EXECUTE, // transaction type
1000, // timeout duration
&dw_result); // transaction result
if (h_data)
b_result = TRUE;
// end conversation
DdeDisconnect (hconv);
}
// free service/topic string handle
DdeFreeStringHandle (id_inst, hsz_serv_top);
return b_result;
}
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