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I have written a MFC app in VS .NET using the resource wizard. I added a drop down [ CComboBox ] with 4 strings (using AddString method). When I run the app and try to pull th e drop-down, the window only shows 1 of 4 strings and the scroll bar is tiny... any suggestions pn to solve this problem???
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In the resource wiard, you can click on the srop arrow of the combo box. This should show the extent to which the combobox will drop when clicked in a real window. You should now be able to drag/change the size of the drop list as required in the resource editor as you would when sizing any normal controls.
If you vote me down, my score will only get lower
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Thank you!! I guest to a wizard-newbie, this was inobvious...
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I have a dialog box that I'd like to dismiss if the user clicks anywhere outside of it. How can I determine if they do that?
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try SetCapture() and release capture.....
hope that helpz.....
cheerz.....
"faith, hope, love remain, these three.....; but the greatest of these is love" -1 Corinthians 13:13
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I thought about that. Actually, I tried it and then ran Spy++ on that dialog to see if it received any additional messages. It didn't appear to.
I guess I'll code it to see - I presume I'd do SetCapture and then add a PreTranslateMessage handler to watch for a WM_LBUTTONUP event?
(This really shouldn't be so difficult!)
Thanks (nice signature, BTW).
Tommy
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u can put the SetCpture code in the OnInit() function .....remember to put the ReleaseCapture() when th exit of the dialog is called.....
NOTE.....
When CWnd no longer requires all mouse input, the application should call the ReleaseCapture function so that other windows can receive mouse input.
happy programmin.....
cheerz.....
"faith, hope, love remain, these three.....; but the greatest of these is love" -1 Corinthians 13:13
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After looking at various articles returned by a search for inline assembly, I'm still no closer to a well defined answer.
I'm trying to convert several functions to inline assembly and haven't found any good info on how to handle parameter passing, into the function and returning to the caller.
Can anyone direct me to any good online articles that deal with MSVS and Inline Assembly specifically? I've got plenty of info on external Win32 programming, but nothing really detailed about MSVC and inlining asm. The "Art of Assembly Language" is a great resource for either external (then linked) code or writing Windows apps entirely in asm. I'm trying to incorporate the two.
thanks gang.
Glenn
Unix Systems Programmer
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quantum69 wrote:
Can anyone direct me to any good online articles that deal with MSVS and Inline Assembly specifically?
Have you tried MSDN?
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
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Look up "__asm blocks" in the MSDN; specificaly "__asm blocks, in functions".
Prefer
__asm
{
}
to
__asm code
__asm code
__asm code
because every time you see __asm, some register data is pushed onto the stack, similar to a function call.
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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I've read all of that, both my local copy of MSDN and the latest online MSDN. I'm talking about how parameters are handled in the stack and returning values. There is a "Playing with the Stack" article here on CodeProject, but he goes off into some tangents after glossing over the initial stack setup. Looking at source code listings generated from VS gives a prologue and epilog that isn't described anywhere in MSDN (online or otherwise).
The default prologue (regardless of parameters that I've seen) is:
<br />
00000 55 push ebp<br />
00001 8b ec mov ebp, esp<br />
00003 83 ec 40 sub esp, 64 ; 00000040H<br />
00006 53 push ebx<br />
00007 56 push esi<br />
00008 57 push edi<br />
00009 8d 7d c0 lea edi, DWORD PTR [ebp-64]<br />
0000c b9 10 00 00 00 mov ecx, 16 ; 00000010H<br />
00011 b8 cc cc cc cc mov eax, -858993460 ; ccccccccH<br />
00016 f3 ab rep stosd<br />
The standard push'ing of necessary registers isn't at issue. The reasoning VC skips 64 bytes (the sub esp,64) isn't discussed. Then the hop of stack with the "rep stosd" loop to fill in 16 double-words... again, no docs even touch this. Because EBP = ESP after the first push, the "lea edi, DWORD PTR [ebp-64]" points back to the beginning of the skipped area, then the "rep stosd" fill loop of "CCCCCCCCh". No params were transfered and yet it set aside these 16 dw's for some purpose? No MSDN or online resource I've located so far gets anywhere near the specifics of this. That's what I'm looking for. ASM is easy, but finding out how to shoehorn VC to perform even rudamentary tasks is a real pain.
Anyone here ever done much inline assembler? I'd like to open a dialog with you to discuss the mechanics of this.
thanks.
Glenn
Unix Systems Programmer
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ok definatly a noob here and i think google is about ready to bann me from anymore searchs.
i am looking for a program or src files that i can use to hook my mouse into altering its movement upon clicking the left button.
essentially what this would do is....i click the left mouse button and the cursor on the screen would move in the oposing direction.ive tried a few different proggies but they will not let me move in both the X and Y direction nor will it let me move in a negative direction.i wnt the program to believe the mouse is always at a zero location untill the left mouse button is pushed,then move the mouse to both -X and -Y settings,then upon release believe itself to be at a zero location again basically ressting itself.
any help with where to look,what to use or what does this already is greatly appreciated.i do alot of SP gaming and this,as you would guess it,will conteract my recoil from weapons.
thanks again,this site is very useful.
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I'd start here if I where you: Hooks and DLLs
[^]
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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appreciate it.....my eyes burn in my sleep already from reading that.
didnt know if there was already something taht would control mouse movements and i could change to make it move a direction i want.im actually looking to move the mouse in a negative direction at a selected speed.
thanks again tho.
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how i use SOM in C++ Program to modify Schema
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In C# there's a Process.FindByName method. How do I do that in C++ ? I have the process name, and I want to find the HWND and send it a message.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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EnumProcesses -> OpenProcess -> GetModuleFileName
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I am trying to use io completion ports in a socket server that I am working on for work.
I based a lot of my initial work on Len Holgates code and articles.
However I am running into problem with threads in the thread pool.
It all works fine for a while, and then I will get a problem where the same OVERLAPPED pointer is accessed simulataneously by 2 different threads in a pool of 5 worker threads (on a HT system with "2" CPUs). This same pointer then gets used in a WSARecv call and the contents of the first call to WSARecv get overwritten by the second call to WSARecv.
So how is it possible for two threads (out of 5) that return from a call to GetQueuedCompletionStatus() to both end up with the same OVERLAPPED pointer?
The overlapped buffer is defined as a class that inherits from OVERLAPPED (called IOBuffer).
This class is created for each new read/write call. The allocater used is the C++ standard new function.
Thanks in advance!
¡El diablo está en mis pantalones! ¡Mire, mire!
Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
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Without seeing the code i think it's going to be hard for anyone to help.
I've written my own IOCP code and never had this problem.
Is your system setup to only have one outstanding recv per connection, or multiple (as Len does in his later articles).
What is the order of ops in your server code, is it something like:
- accept new connection
- create new overapped structure
- post overlapped recv
- ... (wait)
- iocp thread returns from GQCS() with overlapped structure
- (then what - reuse structure, delete structure, ...)
...cmk
Save the whales - collect the whole set
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OK, sorry about the lack of details 
- app accepts a new connection
- app requests a read
- create an new overlapped struct
- mark struct as a read request
- post to io completion port
- iocp thread waits
- iocp thread returns from GQCS() with overlapped ptr
- check state of overlapped struct
- if read requests then do a WSARecv
- if WSARecv returns 0 or io pending mark overlapped as read complete
other wise mark as read error
- iocp thread waits
- iocp thread returns from GQCS() with overlapped ptr
- check state, if read complete push overlapped ptr to event list, notify app
- iocp thread waits
- app recvs message, pops last overlapped ptr off event list
- app process buffer data associated with the overlapped ptr
- app deletes buffer
- app deletes overlapped
- app requests a read
etc
¡El diablo está en mis pantalones! ¡Mire, mire!
Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
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Nothing jumps out as being obvious.
The only thing i can think of is that where you have WSARecv() == 0 ... mark as read complete, a handling thread may return from GQCS() right away with the OVERLAPPED structure.
That is, if you aren't syncing data access, the first thread that is marking the OVERLAPPED as read complete is racing with the GQCS() handling thread.
...cmk
Save the whales - collect the whole set
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OK, so if I understand you correctly, I need some sort of mutex/critical section that is common to all the iocp threads, or one CS/mtx per overlapped ptr?
¡El diablo está en mis pantalones! ¡Mire, mire!
Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
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Well, i don't.
I just let the GQCS() threads handle all overlapped ops - including those that complete right away (as indicated by return of 0).
You should be able to set break points and walk through the code to see if you are having your posting thread and GQCS() thread racing to modify your overlapped struct.
From what you have shown i might try changing the following:
- if read requests then do a WSARecv
- if WSARecv returns 0 or io pending mark overlapped as read complete
other wise mark as read error
to,
- if read requests then clear request flag and do a WSARecv
- if WSARecv returns 0 or io pending mark overlapped as read complete do nothing,
other wise mark as read error
- when GQCS() get overlapped structure for completed read ... notify app ...
...cmk
Save the whales - collect the whole set
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