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The short answer is that bit-field allocation/alignment is pretty much totally at the mercy of the implementation, according to the standards.
In other words, the compiler writer can do almost anything she wants, as long as it's internally consistent.
Have fun!
Peter
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Have you noticed that the number of 1's in first PSR output is 11 while on the second case it is 12 ? How can bit reordering change number of 1's?
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No idea.
Suggestion: write a little test that sets each bitfield in turn to all 1's, then dump PSR. That should tell you exactly where each one lives in each implementation.
Good hunting,
Peter
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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The way I implemented showBits() and getBit(), is it platform-independent? It works correctly on Little Endian platform, I can assure.
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Hi everyone
How can I find threads belong to a specific process?
Is there any api for it?
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I have checked your link but I dont know why its result is different with Task manager
Task manager shows 3 threads for calc.exe but this code generate these info
Thread ID = 0x00016E0
base priority =8
delta priority =0
Thread ID= 0x0000558
base priority =8
delta priority =0
Thread ID= 0x0000115C
base priority =15
delta priority =0
could you help me
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messages wrote: Task manager shows 3 threads for calc.exe...
And your code's output shows the identifier of three threads. What were you expecting?
messages wrote: ...but this code generate these info...
The code uses GetCurrentProcessId(). How did you go about getting the process identifier for calc.exe?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
modified 11-Dec-12 10:52am.
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I used of Task manager for get PID
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Ok, I ran that exact code, only changing:
if (te32.th32OwnerProcessID == 4948)
and it produced:
THREAD ID = 0x00000CB8
base priority = 8
delta priority = 0
THREAD ID = 0x00000B18
base priority = 8
delta priority = 0
THREAD ID = 0x000014B0
base priority = 15
delta priority = 0
Given calc's three threads, that's what I would expect.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
modified 11-Dec-12 13:02pm.
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Got it rise and shine sleepyhead it has 3 "THREAD ID " so its 3 threads for calc.exe,is it correct?
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Who's got experience with this class then? Examples and documentation seem pitifully thin on the ground.
I'm just playing with it to see if it's the right control for a new development.
At the moment I'm wondering how to add a button to a property. The doc suggests overloading the protected "HasButton" function
"Indicates whether a property contains a button." says MSDN
So I don't know if I'll get a button by overloading this and returning TRUE because my overloaded function never gets called; other protectesd functions that don;t ever seem to be called are Init, CreateCombo or IsValueChanged
maybe I'm contructing my CMFCPropertyGridProperty wrong?
Thanks for looking.
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I'm getting the same behavior as I suspect you did trying to override the CreateCombo function in a property class derived from CMFCPropertyGridProperty. Did you ever resolve this?
AlexJ
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Hi,
I want to hook the task bar for that I have used SetWindowHookEx() function in a DLL.
But it it not working all times.
I know the task manager handle using FindWindow() API.
I want to catch the window procedure of the task bar using the task bar handle?
how to do this please help me?
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You can find this information using the GetWindowInfo function[^] to get the class reference of the window, and then GetClassInfoEx[^] to find the pointer to the Windows procedure.
One of these days I'm going to think of a really clever signature.
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You might use GetWindowLong with GWL_WNDPROC as second parameter (see MSDN[^]).
Veni, vidi, vici.
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Hi,
I need some clarification on one point. We normally use static variables in C/C++. We say when we have used a static variable inside a function, it persists its previous value when that function is called again & again, e:g: to say, static variable retains its last value when that function is called again.
Can anybody explaing me the logic behind this. How a static variable knows its last value and how it is not initialized everytime on the function call.
Regards,
Mbatra
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Because a static variable, even when declared in side a func, is created in the DATA section of a programs run space. Think of it like a global static variable that gets initialised to zero and whose value is of course persistent.
An ordinary variable declared inside a func is created on the stack. This of course winds back and forwards so when the func returns the space that variable used is lost to the next func you call.
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Stackoverflow? The competition? Are you mad? 
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Please read that. carefully. ok..
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Why? Are you saying I am wrong?
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I am in over my head again.
I am getting error C2664 and I did read the Tech note ( something about ANSI improvement) about it and frankly I just do not understand what is the problem and <b>how to fix it in VC6.0.</b>
Do I have to redefine the GUID_DEVCLASS_COMPUTER?
The parameter GUID is defined in both functions as “const GUID*”
The API fails with this error C2664 and C_GetClassImgIndex compiles OK
error C2664: 'SetupDiGetClassImageIndex' : cannot convert parameter 2 from 'const struct _GUID *' to 'struct _GUID *'
Conversion loses qualifiers
Fails
b = SetupDiGetClassImageIndex(&m_imgList, &GUID_DEVCLASS_COMPUTER, &nRootImg);
OK
int n = C_GetClassImgIndex(&GUID_DEVCLASS_COMPUTER);
Any help would be greatly appreciated.
Cheers
Vaclav
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Vaclav_Sal wrote: The API fails with this error C2664
You are not using the API, this is a compiler error.
Vaclav_Sal wrote: cannot convert parameter 2 from 'const struct _GUID *' to 'struct _GUID *'
You are passing a const parameter to a function that does not expect one. Use const_cast[^] to remove it. But be sure you understand the potential consequences.
One of these days I'm going to think of a really clever signature.
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Richard ,
I do not follow your explanation.
In this MSDN doc the second parameter is defined as const GUID*.
Am I using wrong version ot the Setupapi.h?
PS Did you read the title? I did say compiler error.I do appreciate your help, but growing little tired of your sideline remarks,that's all.
http://msdn.microsoft.com/en-us/library/windows/hardware/ff551074(v=vs.85).aspx
BOOL SetupDiGetClassImageIndex(
_In_ PSP_CLASSIMAGELIST_DATA ClassImageListData,
_In_ const GUID *ClassGuid,
_Out_ PINT ImageIndex
);
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