newB browser ctrl Q? - C / C++ / MFC Discussion Boards

dazinith9-Aug-02 9:48

9-Aug-02 9:48

i have only used CPropertySheets to do tabbed interfaces, but what you probably need to do is have a function get called whenever a tab is selected.. like a notify event.. whenever a tab(dialog) gets this notify event it should call m_cbMyCombo.ResetContent() and then m_cbMyCombo.InsertString() for each of your items..

what probably happens is that the OnInitDialog() is only called once (or maybe not at all) for each of the tabs(dialogs).. so you should call a function to populate them everytime that tab is selected..

hope im somewhere on target..

-dz

Re: Combo box in CTabCtrl child dialog

Fran Davey9-Aug-02 10:13

Fran Davey

9-Aug-02 10:13

Hi dz,

Thanks! I was dubious (sorry), but that did the trick. What a relief. I already had OnSelChangeTab() handling tab selection, so all I had to do was insert the ResetContent() and InsertString() calls as you suggested.

- Fran
http://www.surrealstructures.com

CComboBox sort now?

dazinith9-Aug-02 8:55

dazinith

9-Aug-02 8:55

i have a combobox which has the sorting function turned on.. but i am dynamically populating it all the time and it doesnt ever sort them.. is there something i can do to make it sort the text strings in the combobox after I've added all of my items? ive tried myComboBox.Redraw() and myComboBox.Invalidate()

thanks for any suggestions!

-dz

Re: CComboBox sort now?

Gary Kirkham9-Aug-02 9:21

Gary Kirkham

9-Aug-02 9:21

Have a look at CComboBox::CompareItem

Gary Kirkham

A working Program is one that has only unobserved bugs

Re: CComboBox sort now?

dazinith9-Aug-02 9:37

dazinith

9-Aug-02 9:37

i dont follow.. i have tried looking at this function on msdn, but this function appears to just compare 2 items, i would be have to sort before i populated the combobox each time..

i was kinda just hoping to call the sorting which is already built in.. it has sort turned on.. but it isnt sorting when i add items.

-dz

Re: CComboBox sort now?

Shog⁹10-Aug-02 8:18

Shog⁹

10-Aug-02 8:18

How are you adding items to the combobox? If you use InsertString(), they won't be sorted, as you're specifying a position. If you're using AddString() (and CBS_SORT is set) they should automatically be sorted.

---

Shog⁹
If I could sleep forever, I could forget about everything...

Re: CComboBox sort now?

dazinith12-Aug-02 3:14

dazinith

12-Aug-02 3:14

thanks a bunch, ill give it a try!

-dz

newB browser ctrl Q?

dlb9-Aug-02 8:11

dlb

9-Aug-02 8:11

my question regards the MS browser control , but this seemed the most appropriate forum.

Does anyone know whether it's possible to affect the security domains of windows and frames presented within the browser control selectively - eg. for different window instances to possess alternate security levels. I'd like to develop a BC based app. that possesses security characteristics similar to those of an HTA. This is primarily to allow script originating from one domain to affect pages from a foreign domain without providing the foreign domain a 'Trusted' status relative to the top level window. Essentially I'm trying to get the BC instance to behave like an HTA.

Any advice a/o leads on resource will be appreciated - I'm new to windows development.

Thanks
David

Logging WriteProcessMemory calls

carrie9-Aug-02 7:53

carrie

9-Aug-02 7:53

I've been asked to write a program that will start another program up and then log all calls it makes to WriteProcessMemory() and any changes it makes to its variables. Is this even possible and if so where would be a good place to start looking?

Thanks

Re: Logging WriteProcessMemory calls

Daniel Lohmann9-Aug-02 9:46

Daniel Lohmann

9-Aug-02 9:46

Intercepting WriteProcessMemory() is possible using API hooking techniques. (There are articles about this here at Codeproject.)

However, WriteProcessMemory() is usually used only to modify memory in foreign processes. If you need to monitor what the process does on its own address space you are nearly out of luck. This means that you have to write a debugger that connects to the target process, halts all threads and single steps them to monitor the changes. Really, really hard work!

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Re: Logging WriteProcessMemory calls

carrie9-Aug-02 11:42

carrie

9-Aug-02 11:42

Thanks for the reply, sounds nasty. Might have to tell the guy that its going to take a while if it'll be done at all. I wasn't expecting it to be easy to check the variables of another process but that sounds a little out of my league just now, maybe in a couple of years Smile | :)

Thanks again

Re: Logging WriteProcessMemory calls

Martin Marvinski9-Aug-02 22:00

Martin Marvinski

9-Aug-02 22:00

carrie wrote:
Thanks for the reply, sounds nasty. Might have to tell the guy that its going to take a while if it'll be done at all. I wasn't expecting it to be easy to check the variables of another process

I think he miss-read your question. It is nasty to do that to the program's own process, but your program is going to start another program with the CreateProcess function, right? If that's the case then it won't be as hard as because you your program can intercept all the other programs messages amd can easily log it. Look for windows hooks at msdn.microsoft.com.

Re: Logging WriteProcessMemory calls

Nick Parker9-Aug-02 15:42

Nick Parker

9-Aug-02 15:42

carrie wrote:
I've been asked to write a program that will start another program up and then log all calls it makes to WriteProcessMemory() and any changes it makes to its variables.

What value can you get out of this output, seriously curious here. Is the idea to detect memory flaws in a programs process? How do you analize this?

Nick Parker

Re: Logging WriteProcessMemory calls

Todd Smith9-Aug-02 16:53

Todd Smith

9-Aug-02 16:53

Maybe something like BoundsChecker would work for you.

When someone asks you for the impossible maybe it's time to ask them what they really want. Smile | :)

Todd Smith

Re: Logging WriteProcessMemory calls

carrie10-Aug-02 8:27

carrie

10-Aug-02 8:27

hehe, thanks for all the help guys, more pointers are always welcome Smile | :)

My program would be starting the other process up so I'll take a good look at hooks(thanks). The main reason for doing it is because there is a group of us working on a set of programs. We're all students and bored doing the usual 2nd year programming stuff so we're writing some other games and apps and taking requests from local businesses for fun.

Just now the way we work it is that we have everyone send in the executables once they're finished their programs but we're trying to get this program and the ftp site-to-site program up and running to make life easier. Because we don't send the sources around we like to be able to check that our programs are working on others machines as well so we can then pass them on.

Anyway, thanks for the tips and keep them coming Smile | :)

if anyone knows the solution to my CFtpConnection::Command problems feel free to help Smile | :)

User breakpoint called from code at 0x77f9f9df

redeemer9-Aug-02 7:36

redeemer

9-Aug-02 7:36

What does that mean? The messagebox appears and it goes into assembly debugging, i'm trying to enumerate all the available compression driver on the system, here's the code:

void onConvert()
{
	acmDriverEnum((ACMDRIVERENUMCB)listCallback, NULL, ACM_DRIVERENUMF_DISABLED);
}

BOOL WINAPI listCallback(HACMDRIVERID hadid, DWORD dwInstance, DWORD fdwSupport)
{
	if (fdwSupport == ACMDRIVERDETAILS_SUPPORTF_CODEC)
	{
		ACMDRIVERDETAILS details;
		int box;
		int test;
		details.cbStruct = sizeof(details);

		box = acmDriverDetails(hadid, &details, NULL);

		SendMessage(GetDlgItem(ghWnd, IDC_CODECS), LB_ADDSTRING, 0, (LPARAM)details.szLongName);
	}

	return true;
}

First i call the onConvert and then it uses the listCallback function to enumerate the different drivers.

Thanks in advance

-Redeemer

Re: User breakpoint called from code at 0x77f9f9df

Daniel Lohmann9-Aug-02 9:52

Daniel Lohmann

9-Aug-02 9:52

Hm...

- Did you placed a breakpoint on the very first statement of your listCallback?

- The cast to ACMDRIVERENUMCB for the first parameter to acmDriverEnum() should not be necessary. If the compiler complains about it, there is something wrong.

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Embed a DLL. Possible?

clintsinger9-Aug-02 7:04

clintsinger

9-Aug-02 7:04

I have a dll that I would like to embed in an exe so I only have to distribute one file with out extracting. Is there a way to put the dll in the exe and still be able to access its functions?

Thanks,
Clint

Re: Embed a DLL. Possible?

C^hris L^osinger9-Aug-02 7:09

C^hris L^osinger

9-Aug-02 7:09

you could attach it to the end of the EXE and extract it at runtime, then use LoadLibrary/GetProcAddress to access the functions.

-c

Conservative:
One who admires radicals centuries after they're dead.
-- Leo C. Rosten

image effects!

Re: Embed a DLL. Possible?

clintsinger9-Aug-02 7:10

clintsinger

9-Aug-02 7:10

I was hoping to avoid making a temp file. Are there any other ways or is this pretty much the only way?

If this is the only way how does one extract a dll? I am still learning how resources work, over and above icons. Smile | :)

Re: Embed a DLL. Possible?

C^hris L^osinger9-Aug-02 7:19

C^hris L^osinger

9-Aug-02 7:19

i don't think it's the only way, but it might be the only way without getting into some serious low level stuff.

you could put it in a resource, sure. that would be the most VisualStudio-friendly way. it would take about ten lines of C (plus error checking) to get the DLL out of memory and into a file - no big deal.

or, you could concatenate the DLL onto the end of the EXE, using an external app, with a length DWORD at the very end, so you know how many bytes to extract from the EXE. this method is trickier and might not be worth the effort. the resource method is probably safer.

	// find it
   HRSRC hRsrc = FindResource(hInstance, pName, "DLL");
	if (hRsrc)
	{
		// load it
		HGLOBAL hGlobal = LoadResource(hInstance, hRsrc);

		if (hGlobal)
		{
			// lock it
			BYTE *pDLL = (BYTE *)LockResource(hGlobal);
        
			DWORD dwSize = SizeofResource(hInstance, hRsrc);

... now open a file, and write the dwSize BYTEs starting at pDLL to a file.
			// clean up
			UnlockResource(hGlobal);
			FreeResource(hGlobal);
...

-c

Conservative:
One who admires radicals centuries after they're dead.
-- Leo C. Rosten

image effects!

Re: Embed a DLL. Possible?

clintsinger9-Aug-02 7:26

clintsinger

9-Aug-02 7:26

Thanks, it doesn't look too hard.

Cheers,
Clint

Re: Embed a DLL. Possible?

Daniel Lohmann9-Aug-02 7:24

Daniel Lohmann

9-Aug-02 7:24

One more tip:

If you link to your dll with delay loading, you do not have to trickle with GetProcAddress() and can also easily export/import classes.

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Re: Embed a DLL. Possible?

clintsinger9-Aug-02 7:25

clintsinger

9-Aug-02 7:25

What do mean about delay loading? Did you mean runtime linking? Any examples?

Re: Embed a DLL. Possible?

C^hris L^osinger9-Aug-02 9:03

C^hris L^osinger

9-Aug-02 9:03

when you build the DLL, it will build a .LIB file that contains stub function calls. if you link to this .LIB, it will handle the LoadLibrary/GetProcAddress stuff for you - you just call the DLL functions as if they were from a static library.

there may be some compiler switch necessary to enable the creation of this .LIB, but it's an easy one to find, IIRC.

-c

Conservative:
One who admires radicals centuries after they're dead.
-- Leo C. Rosten

image effects!

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