C / C++ / MFC

[C++] How to change the mouse position in Mouse Hook

21-Jul-13 23:45

It is not clear what you are trying to do, but some of these links[^] may help.

Use the best guess

Rex Miao21-Jul-13 17:25

Re: [C++] How to change the mouse position in Mouse Hook

21-Jul-13 17:25

Dear All,
This is my first time to ask question on this platform.
The question is: I want to write a program, which can modify the mouse position to achieve inverting mouse movement, like wanna move up but it goes down. wanna move left but it goes right.

here is the callback sample code, but I can get what I want.
What can I do?

LRESULT CALLBACK MouseHookProc2(int nCode, WPARAM wParam, LPARAM lParam)
{

	if(wParam == WM_MOUSEMOVE ||wParam == WM_NCMOUSEMOVE)
	{

		MOUSEHOOKSTRUCT* data=(MOUSEHOOKSTRUCT*) lParam;
		LPARAM lParam2= MAKELPARAM(0,data->pt.y);
		return CallNextHookEx(NULL,nCode,wParam,lParam2);

	}
return CallNextHookEx(NULL,nCode,wParam,lParam);
}

pasztorpisti21-Jul-13 21:35

pasztorpisti

21-Jul-13 21:35

I think you are approaching the problem from a wrong direction. The mouse works the following way: The hardware sends movement deltas to the machine and to the OS via the driver and there it gets accumulated into a mouse position value. If you want to invert the movement you have to invert the deltas because you simply can't do that with the position. Maybe if you knew the previous value of the position... But even in that case that would be quite a messy solution. Another problem with this solution is that as far as I know most hook types are not allowed to modify the incoming parameters and they have to pass on them to the next hook handler unmodified.

You should probably write a mouse filter driver:
http://code.msdn.microsoft.com/windowshardware/Moufiltr-WDF-Version-fb57f5de[^]
http://www.maf-soft.de/mafmouse/[^]

Re: [C++] How to change the mouse position in Mouse Hook

Rex Miao22-Jul-13 16:47

Re: [C++] How to change the mouse position in Mouse Hook

22-Jul-13 16:47

Thanks for your information lead me to the right direction.
I will study driver filter then. thanks

pasztorpisti22-Jul-13 22:42

pasztorpisti

22-Jul-13 22:42

You are welcome! Good luck, have fun!

Re: [C++] How to change the mouse position in Mouse Hook

Rex Miao14-Aug-13 16:10

Re: [C++] How to change the mouse position in Mouse Hook

14-Aug-13 16:10

Dear Bro,
Do you know "sakasamouse"?
That tool can do excatly what I want.
And it seems it is not a driver.
because it is an .exe file and has an .dll with it.

Do you know how it do?
Thanks in advance

pasztorpisti14-Aug-13 19:12

pasztorpisti

14-Aug-13 19:12

No, I don't know it. I use my mouse as it comes with my windows.

Re: [C++] How to change the mouse position in Mouse Hook

Rex Miao14-Aug-13 19:24

Re: [C++] How to change the mouse position in Mouse Hook

14-Aug-13 19:24

OKay. thanks anyway.
Maybe I should ask again...

Stephen Hewitt23-Jul-13 8:35

Stephen Hewitt

23-Jul-13 8:35

Give calling SetCursorPos[/\] a try.

Steve

Re: [C++] How to change the mouse position in Mouse Hook

Rex Miao24-Jul-13 17:49

24-Jul-13 17:49

try it alreay. but it can't fullfill the use I need.
even if it didn't have any effect at all.
guess the mouse move event reflash is too quick.

Per CPU Cycle Times

Richard Andrew x6421-Jul-13 9:07

Richard Andrew x64

21-Jul-13 9:07

Does anyone know how to retrieve the user and kernel cycle times on a per-logical processor basis in Windows?

Task Manager does it, but how? Every function I've looked at only gives total times for all processors.

The difficult we do right away...
...the impossible takes slightly longer.

Re: Per CPU Cycle Times

leon de boer13-Aug-13 8:09

leon de boer

13-Aug-13 8:09

You start with the Windows Performance Toolkit (WPT)

http://msdn.microsoft.com/en-us/performance/cc825801.aspx[^]

That gives you access to the ETW subsystem

A more detailed discussion paper

http://demandtech.com/wp-content/uploads/2012/04/Measuring-Processor-Utilization-in-Windows.pdf[^]

Physical drive size

john563219-Jul-13 23:32

19-Jul-13 23:32

I have a memory card which is having corrupted file system. I need to get physical drive size.
I tried using WMI but it gives 8 MB only even though its size is 30GB.

Can you please guide me?

Richard MacCutchan20-Jul-13 0:09

20-Jul-13 0:09

If the file system is corrupt then it is unlikely that any of the normal functions will work successfully, you should try to reformat the device.

Use the best guess

john563220-Jul-13 0:14

20-Jul-13 0:14

But we nothing to do with file system, need to get physical disk size. Many other software are showing correct size for same memory card.

Can you please give any idea?

Richard MacCutchan20-Jul-13 0:15

20-Jul-13 0:15

Maybe you need to show us the code you have tried.

Use the best guess

john563220-Jul-13 0:24

20-Jul-13 0:24

Below is WMI call

C++

VariantClear(&vtProp);
hr = pclsObj->Get(L"Size", 0, &vtProp, 0, 0);

Below is IOCTL call

C++

bResult = DeviceIoControl(hDevice,                       // device to be queried
                            IOCTL_DISK_GET_DRIVE_GEOMETRY, // operation to perform
                            NULL, 0,                       // no input buffer
                            pdg, sizeof(*pdg),            // output buffer
                            &junk,                         // # bytes returned
                            (LPOVERLAPPED) NULL);          // synchronous I/O

  CloseHandle(hDevice);

		ULONGLONG DiskSize = 0;    // size of the drive, in bytes

  DiskSize = pdg->Cylinders.QuadPart * (ULONG)pdg->TracksPerCylinder *
               (ULONG)pdg->SectorsPerTrack * (ULONG)pdg->BytesPerSector;
    wprintf(L"Disk size       = %I64d (Bytes)\n"
            L"                = %.2f (Gb)\n", 
            DiskSize, (double) DiskSize / (1024 * 1024 * 1024));

But both gives same result. pdg->Cylinders.QuadPart is coming 1.

john563220-Jul-13 1:36

20-Jul-13 1:36

I tried IOCTL

C++

DeviceIoControl(hDevice,IOCTL_DISK_GET_LENGTH_INFO,0,0,&gli,sizeof(gli),&ret,0);
 ULONGLONG siize = gli.Length.QuadPart;

It gives correct result on VS2008 but not on VS2003. I need to code for VS2003.
Please guide...

Jochen Arndt20-Jul-13 2:02

Jochen Arndt

20-Jul-13 2:02

The VS version should make no difference for device IO control API functions. But IOCTL_DISK_GET_LENGTH_INFO requires XP or later. To support older Windows versions use IOCTL_DISK_GET_PARTITION_INFO.

john563220-Jul-13 3:53

20-Jul-13 3:53

But why it is not giving correct result on my machine win7+vs2003 but working fine with win7+vs2008. I can not use vs2008 simply because whole product is in vs2003 and need to make correction in same.

please suggest solution...

Jochen Arndt20-Jul-13 23:35

Jochen Arndt

20-Jul-13 23:35

I don't know why.

DeviceIoControl() is a Windows kernel function that passes the request to the device specific driver. So there should be no differences on one machine when calling this from a VS 2003 or VS 2008 generated application or even any other programming language.

Richard MacCutchan20-Jul-13 2:42

20-Jul-13 2:42

Simple answer use VS2008 or later.

Use the best guess

image processing toolkits | batch image processing

C^hris L^osinger20-Jul-13 11:27

C^hris L^osinger

20-Jul-13 11:27

you have a 30GB memory card? that's a strange size... they're sized in generally powers of two.