API function
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Hi all, I wanna create a program that startup each time the pc started..which api i can used? :rolleyes:
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to have programs start when the computer starts up u need to edit the registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run or HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
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Ravi Bhavnani wrote: I thought these entries required the user to first login. HKEY_CURRENT_USER would but HKEY_LOCAL_MACHINE exists even when no one is logged in. Ravi Bhavnani wrote: I think one would have to go the service route (on supported Win OSs) in order to have an application start on boot up. Not necessarily.
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
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Ravi Bhavnani wrote: I thought these entries required the user to first login. HKEY_CURRENT_USER would but HKEY_LOCAL_MACHINE exists even when no one is logged in. Ravi Bhavnani wrote: I think one would have to go the service route (on supported Win OSs) in order to have an application start on boot up. Not necessarily.
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
DavidCrow wrote: HKEY_LOCAL_MACHINE exists even when no one is logged in. True. But if I'm not mistaken, a "Run" entry in the
HKEY_LOCAL_MACHINEsubtree causes the application to start after any user logs in, as opposed to a corresponding entry for a specific user in theHKEY_USERSsubtree which causes the app to only start when that user logs in. Regardless, the user has to first login. <aside> I believe this mechanism is used by installers that ask "Do you want to install this program for all users or just yourself?". </aside> /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com -
DavidCrow wrote: HKEY_LOCAL_MACHINE exists even when no one is logged in. True. But if I'm not mistaken, a "Run" entry in the
HKEY_LOCAL_MACHINEsubtree causes the application to start after any user logs in, as opposed to a corresponding entry for a specific user in theHKEY_USERSsubtree which causes the app to only start when that user logs in. Regardless, the user has to first login. <aside> I believe this mechanism is used by installers that ask "Do you want to install this program for all users or just yourself?". </aside> /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)comRavi Bhavnani wrote: But if I'm not mistaken, a "Run" entry in the HKEY_LOCAL_MACHINE subtree causes the application to start after any user logs in...Regardless, the user has to first login. Not so. I just verified this and without logging in to the machine, the applications in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run are indeed started. [edit] The jury is still out on this one. I'll keep looking... [/edit]
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
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Ravi Bhavnani wrote: But if I'm not mistaken, a "Run" entry in the HKEY_LOCAL_MACHINE subtree causes the application to start after any user logs in...Regardless, the user has to first login. Not so. I just verified this and without logging in to the machine, the applications in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run are indeed started. [edit] The jury is still out on this one. I'll keep looking... [/edit]
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
DavidCrow wrote: without logging in to the machine, the applications in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run are indeed started. That's amazing. It seems to work exactly as I described on my Win XP Home SP1 box. I confirmed this by adding a
HKEY_LOCAL_MACHINE\...entry to this test app:#include "stdafx.h"
#include "time.h"int main(int argc, char* argv[])
{
time_t tmNow;
time (&tmNow);
char szFilespec [255];
sprintf (szFilespec, "C:\\%d.txt", tmNow);FILE* fp = fopen (szFilespec, "w");
fclose (fp);
return 0;
}and rebooting and logging in a few seconds later. As I expected, there was only one file (
C:\1124224887.txt) created. This matches Microsoft's documentation[^] of these keys. /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com -
Ravi Bhavnani wrote: But if I'm not mistaken, a "Run" entry in the HKEY_LOCAL_MACHINE subtree causes the application to start after any user logs in...Regardless, the user has to first login. Not so. I just verified this and without logging in to the machine, the applications in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run are indeed started. [edit] The jury is still out on this one. I'll keep looking... [/edit]
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
-
DavidCrow wrote: without logging in to the machine, the applications in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run are indeed started. That's amazing. It seems to work exactly as I described on my Win XP Home SP1 box. I confirmed this by adding a
HKEY_LOCAL_MACHINE\...entry to this test app:#include "stdafx.h"
#include "time.h"int main(int argc, char* argv[])
{
time_t tmNow;
time (&tmNow);
char szFilespec [255];
sprintf (szFilespec, "C:\\%d.txt", tmNow);FILE* fp = fopen (szFilespec, "w");
fclose (fp);
return 0;
}and rebooting and logging in a few seconds later. As I expected, there was only one file (
C:\1124224887.txt) created. This matches Microsoft's documentation[^] of these keys. /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)comRavi Bhavnani wrote: ...and rebooting and logging in a few seconds later. But the question is does your test application run if you don't log in?
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
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Ravi Bhavnani wrote: Did you mean RunServices instead of Run? No.
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
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Ravi Bhavnani wrote: ...and rebooting and logging in a few seconds later. But the question is does your test application run if you don't log in?
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
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DavidCrow wrote: HKEY_LOCAL_MACHINE exists even when no one is logged in. True. But if I'm not mistaken, a "Run" entry in the
HKEY_LOCAL_MACHINEsubtree causes the application to start after any user logs in, as opposed to a corresponding entry for a specific user in theHKEY_USERSsubtree which causes the app to only start when that user logs in. Regardless, the user has to first login. <aside> I believe this mechanism is used by installers that ask "Do you want to install this program for all users or just yourself?". </aside> /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)comRavi Bhavnani wrote: But if I'm not mistaken, a "Run" entry in the HKEY_LOCAL_MACHINE subtree causes the application to start after any user logs in, as opposed to a corresponding entry for a specific user in the HKEY_USERS subtree which causes the app to only start when that user logs in. Regardless, the user has to first login. That's the way I've taken it to work, I always have to log in of HKLM\...\Run to take effect. One thing I suggest doing though, is use Winlogon Notification Packages (assuming you're programming for an NT-based version of windows), you can listen to startup/shutdown/login/logoff and other events. Check: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthn/security/winlogon\_notification\_packages.asp HTH
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Ravi Bhavnani wrote: But if I'm not mistaken, a "Run" entry in the HKEY_LOCAL_MACHINE subtree causes the application to start after any user logs in, as opposed to a corresponding entry for a specific user in the HKEY_USERS subtree which causes the app to only start when that user logs in. Regardless, the user has to first login. That's the way I've taken it to work, I always have to log in of HKLM\...\Run to take effect. One thing I suggest doing though, is use Winlogon Notification Packages (assuming you're programming for an NT-based version of windows), you can listen to startup/shutdown/login/logoff and other events. Check: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthn/security/winlogon\_notification\_packages.asp HTH
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Hi all, I wanna create a program that startup each time the pc started..which api i can used? :rolleyes:
One thing I suggest doing, is use Winlogon Notification Packages (assuming you're programming for an NT-based version of windows), you can listen to startup/shutdown/login/logoff and other events. Check: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthn/security/winlogon\_notification\_packages.asp HTH
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why would there have to be two? if its started on startup it wouldnt create another process of itself for the user logging in. would it?
I booted the system at 2:30pm and logged in at 2:35pm. The file was timestamped 2:35pm. My point was, if the application ran on boot up, there would have been 2 files - one timestamped 2:30pm and the other 2:35pm. I also confirmed that the file is created every time I login. /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com
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I booted the system at 2:30pm and logged in at 2:35pm. The file was timestamped 2:35pm. My point was, if the application ran on boot up, there would have been 2 files - one timestamped 2:30pm and the other 2:35pm. I also confirmed that the file is created every time I login. /ravi My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com
