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Hi! 
Now I wanna sent 4 bytes data by calling DeviceIoControl() from my directshow application to my streaming minidriver.First,I call the CreateFile() to get a device handle,and the minidriver can receive a IRP_MJ_CREATE IRP,and the CreateFile() returns nonzero.But when the app runs to DeviceIoControl(),the minidriver does not recieve any SRB.The DeviveIoControl() returns zero,and GetlastError() returns 50,which says:"The request is not supposed."
I difined my own IOCTL command in my driver and app.
What causes the error 50 or if there is any other way to send data to steaming minidriver from directshow application?
Thanks for any help!
momer
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Does CreateFile return INVALID_HANDLE_VALUE?
Does your driver antry set a dispatch handler for DeviceIoControl?
Does you DeviceIoControl handler handle that IOCTL?
Is the buffer size correct for thst IOCTL?
Nunc est bibendum
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Is it possible to get Raw Touch values from a USB microtouch (3M) touchscreen monitor?
Thanks...
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Watch the USB traffic and read the device specifications.
Don't try it, just do it! 
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About 3 months ago, I purchased a Netgear WGR614v6 Wireless G router; and have had nothing but problems. Depsite my continued posts on Netgear's site, and unanswered calls to their Tech Support, I thought I would post my woes here, in hopes someone might have a suggestion for me that I've yet to try (other than purchase a LinkSys router - which is what I should have done from the get go).
Here's the problem:
Anytime any computer connected to the router via wireless, attempts to copy a large number of files (to a Local share on the main PC to which the router is directly connected), the wireless on the router just dies. All the hard wired computers plugged directly into the router still have a connection, it's just the wireless that essentially "turns off". The only solution is to unplug the router and plug it back in, thereby "restarting" the router.
What I've tired (settings)
Originally I had the router set to Chanl. 11 with 64-bit WEP enabled. After a post to the Netgear fourms with this problem, their tech support suggested I switch to Chanl 1 and disable WEP.
Well, since I'm not about to run a wireless router without security, I changed to Chanl 1 and switched over to WPA encryption - still the same problem.
I can copy "smaller" files back-and-forth all day long, but if I attempt to copy a large number of files (e.g., 5+ gigs) - it will kill the wireless connection almost every single time.
Suggestions? (before I go out and purchase a LinkSys router)
:..::. Douglas H. Troy ::..
Fold with us|Development Blogging|viksoe.dk's site
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Douglas Troy wrote:
Suggestions? (before I go out and purchase a LinkSys router)
That sounds like a physical problem with the router. I am trying to track down a similar problem with the same model v4 system. The router, however, never locks up -- I have been trying to establish if it is db strength or external influence or something internal. When transferring large files communication will be lost in the middle, unknown reason, but there is no need to reset the router, all physical functionality is maintained following the interrupt. I can start again easily within about 10 seconds without reset. However, it still kills the copy. I'll have to check here for answers in case they are related. Or we both toss our Netgear systems and go linksys.
If the unit is still under warrenty coverage I would hassle them about it, you paid for it, a locked up router should be their fault. Mine has never locked up, it runs unattented at the top of my bookshelf.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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I have been bugging them about since day one, and they keep telling me that it must be some form of interference from another device ... blaa blaa blaa ... but I can lock the router up every time, just by copying a large number of files.
I am actually going to BestBuy to purchase a LinkSys router today; I will let you know what happens with that one ... although I suspect it will work just fine.
:..::. Douglas H. Troy ::..
Fold with us|Development Blogging|viksoe.dk's site
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Douglas Troy wrote:
I have been bugging them about since day one, and they keep telling me that it must be some form of interference from another device ... blaa blaa blaa ... but I can lock the router up every time, just by copying a large number of files.
I am no networking genius... but I would think that mine "could be" interferance, the router stays working, all the hardware is working after the "cut off". Interference from another device should interrupt the signal, but leave the hardware functioning, just like mine. But yours is locking up the router, that sounds like hardware.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Well, I purchased a LinkSys Wireless G router lastnight and set it up using the same "defaults" that I had the Netgear router configured under. After several hours use, and copying large numbers of files back<->forth from my server to various PCs (wired and wireless) not a single glitch.
So ... having done that, and said that, a call to Netgear is in order ...
Nothing like owning a $30 wireless paperweight ... 
:..::. Douglas H. Troy ::..
Fold with us|Development Blogging|viksoe.dk's site
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Douglas Troy wrote:
Well, I purchased a LinkSys Wireless G router lastnight and set it up using the same "defaults" that I had the Netgear router configured under. After several hours use, and copying large numbers of files back<->forth from my server to various PCs (wired and wireless) not a single glitch.
You can tell them they lost two customers.... I guess this is my next purchase too.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Well, I went more bizarre in my solution.... The machine I do the longest copies from is my DVR on a wifi ethernet bridge... so I am picking up a pair of electric outlet bridges to see if I can manage 1/3 megabit through the walls... they claim it will do 11 megabit, most reviews say 6 realistically, that's all still more than I need.
and surprise... LinkSys, bypass the wifi for anything other than handheld and work laptops which so far have not been a problem. Maybe swap the wifi out come tax season.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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I want to make an applicaiton which can inform me Call identification (CLI).
Readymade Application are available but it does not fulfill my needs. Any Sample Project for VB6?
 
Shoaib Nawaz
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This is a hardware forum - and no VB6 forum!
Don't try it, just do it!
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Sorry
i have created the CallerID by using
the chip available in the market and
didnot use any programing language
for that.
Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com
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we do have vb programs....... you need to refer tapi materials for this.... you can use tapi dll for this but you need to have a phone line with caller id facility and a full duplex voice modem.... download TapiEX ocx search for this in net and down load it the sample programs with this software will have code which u need
madhu
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How to detect LPT port base address? Either in user or kernel mode.
How to enumerate LPT ports installed in system?
Thank you.
Sergey Katsyuba
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You don't need to detect the base addresses because the pnp manager should do this for you.
Enumerating LPT ports works via setupapi.
Don't try it, just do it!
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This is a real hardware question . I'm going to build something of an old C64 computer, I only want to take the processor, and as few components as possible.
I'm going to do a hardware that displays time in binary. I'll need the ROM to, or at least another ROM, the program I want to write is like this in assembly:
org 100h
xor cx,cx
xor dx,dx
start:
inc eax
cmp eax,07FFFFFh ;clockspeed in hz
je sec
jmp start
sec:
xor eax,eax
inc bl
push dx
push ax
mov ch,bl
call printANuminCHwithSpace
mov ch,cl
call printANuminCHwithSpace
mov ch,dl
call printANuminCH
MOV dl, 13 ; print char
MOV ah, 02h
INT 21h
MOV dl, 10 ; print char
MOV ah, 02h
INT 21h
pop ax
pop dx
cmp bl,60
je min
jmp start
min:
xor bl,bl
inc cl
cmp cl,60
je h
jmp start
h:
xor cl,cl
inc dl
cmp dl,24
je day
jmp start
day:
xor dl,dl
jmp start
printANuminCH:
push ax
push dx
xor ax, ax
mov al, ch ;2 char
mov dh, 100 ;1 char skipping this for now
div dh
add al, 30h
MOV dl, al ; print char
MOV ah, 02h
INT 21h
xor ax, ax
mov al, ch ;2 char
mov dh, 100
div dh
mov al,ah
xor ah,ah
mov dh,10
div dh
add al, 30h
MOV dl, al ; print char
MOV ah, 02h
INT 21h
xor ax, ax
mov al, ch ;last char
mov dh, 10
div dh
add ah, 30h
MOV dl, ah ; print char
MOV ah, 02h
INT 21h
pop dx
pop ax
ret
printANuminCHwithSpace:
push dx
push ax
call printANuminCH
MOV dl, 20h ; print char
MOV ah, 02h
INT 21h
pop ax
pop dx
ret
The displaying code isn't going to be there.
Here's how it could look like when implemented:
The ports should be replaced and represented by their appropriate value.
org 100h
xor cx,cx
xor dx,dx
start:
inc ax
cmp ax,0FFFFh ;clockspeed in hz
je sec
jmp start
sec:
xor ax,ax
inc bl
out bl,0h
cmp bl,60
je min
jmp start
min:
xor bl,bl
inc cl
out cl,1h
cmp cl,60
je h
jmp start
h:
xor cl,cl
inc dl
out dl,2h
cmp dl,24
je day
jmp start
day:
xor dl,dl
jmp start
Is there any good company, (europe should be best, I live in Sweden), that makes ROMs? How much could it cost. I don't want to use to much money.
I need 17 outputs, do I need a multiplexer? Where could I get one?
How is the machine code in the C64?
Thanks in advance
Niklas Ulvinge aka IDK
-- modified at 13:29 Saturday 10th September, 2005
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Do you remmember any prise?
It should be cheeper now or more expensive...
Thanks for your reply anyway
Niklas Ulvinge aka IDK
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This is an almost hardware question.
I'm working on a circut simulator.
The problem is that I don't know how to implement the ground.
Think like this:
- Everything, cords, batteries, diods, are objects. (I program in C#, and all objects is childs to a special class called item)
- The negative pole of a battery is giving output -100, wich could be called a low pressure.
- The positive pole of a battery is giving output 100, wich could be called a high pressure.
- Cords doesn't have any data, wich means if you want output from a cord it returns the sum of what it is conneced to.
Again, How do I make implement ground?
Niklas Ulvinge aka IDK
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It probably wouldn't be a bad idea to find information on the internet or in books that would help you get a better grasp of electrical circuits. As for implementing ground, the power of electricity needs somewhere to flow to. That would be ground. When you connect a positive or negative voltage to ground the power will flow. Between these you have your circuit or load.
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