Help in API

[Arnaldo Fuziy]

We're trying to do a few things here without success and I would like to ask
for your help, please.
1) Disable and re-enable auto suspend
have found that we could P/Invoke
SystemParametersInfo(SPI_SETBATTERYIDLETIMEOUT, 0, NULL, TRUE) but haven't
found any working example and have no idea on how to start

2) Get free disk space
we could P/Invoke GetDiskFreeSpaceEx but no working example either

3) Get free memory
P/Invoke GlobalMemoryStatus, no working example either

4) Get remaining battery
- P/Invoke GetSystemPowerStatusEx - have found an example but couldn't get
it to work
- could use OpenNetCF.BatteryStatus but I still don't want to go that way...
I'd rather P/Invoke it myself...

Tks very much,

Arnaldo.

 

[Alex Feinman [MVP]]

GetDiskFreeSpaceEx:
http://groups.google.com/[email protected]&rnum=1

GlobalMemoryStatus:
http://groups.google.com/[email protected]&rnum=1

GetSystemPowerStatusEx:
http://groups.google.com/[email protected]&rnum=2

SystemParametersInfo:
http://groups.google.com/[email protected]&rnum=1

 

[Geoff Schwab [MSFT]]

Here are a couple of the ones you wanted in C#. It looks like Alex has
provided links to similar examples and the others on your list.

public class MEMORYSTATUS
{
public uint dwLength;
public uint dwMemoryLoad;
public uint dwTotalPhys;
public uint dwAvailPhys;
public uint dwTotalPageFile;
public uint dwAvailPageFile;
public uint dwTotalVirtual;
public uint dwAvailVirtual;
}

[DllImport("CoreDll.dll", EntryPoint="GlobalMemoryStatus")]
public static extern void GlobalMemoryStatus
(
MEMORYSTATUS lpBuffer
);

[DllImport("CoreDll.dll", EntryPoint="GetSystemMemoryDivision")]
public static extern int GetSystemMemoryDivision
(
ref uint lpdwStorePages,
ref uint lpdwRamPages,
ref uint lpdwPageSize
);

Use...

uint storePages = 0;
uint ramPages = 0;
uint pageSize = 0;
int res = GetSystemMemoryDivision(ref storePages, ref ramPages, ref
pageSize);

MEMORYSTATUS memStatus = new MEMORYSTATUS();
GlobalMemoryStatus(memStatus);

--
Geoff Schwab
Program Manager
Excell Data Corporation
http://msdn.com/mobility

This posting is provided "AS IS" with no warranties, and confers no rights.

 

[Arnaldo Fuziy]

Thanks very much, Alex and Geoff... I'll try the sample codes you've sent...

 

[Arnaldo Fuziy]

With your fine help, we've got working:

- Disk space is fine...
- Battery info returns the battery info but not the backup battery... Is
there anything else I could do?
- The memory status returns 163208757280 and 80906463648210944 for length
and memory load; for 0 and 123004564856111104 totalphysical and
availphysical... Means nothing (at least) for me... The function
GetSystemMemoryDivision reports NotSupportedException...
- The most important for us: the idle timeout... It doesn't do anything,
meaning, I set it to "n" numbers and it doesn't change anything... What am I
missing?

Tks again,

Arnaldo.