|
I am creating a bunch of dockable dialog bars that have several Edit controls in them to display data. I am doing this within a SDI application. Basicaly I am trying to create lots of little "tool bars" that I can organise on the screen as I want and hide/show at will. Think the tool bars in an application like flashMX or photoshop and thats what Im aiming for, just less complicated using standard controls arranged in the dialog editor.
Given that the SDI wizard (in vis6C++) doesnt create a data map so I can assign a variable and use UpdateData to display variables in these edit boxes that are within the dialog bars, how do I go about setting the data in them. I know I can use SetText and GetText but theyre only good for text, I want to display DOUBLEs and other numerical data in them.
I guess what I am asking is, what is the standard way to control the content of Edit controls that are found in DialogBars?
Alternatively if someone else has a better idea as to how to create an extensible interface that is based on controls I would love to hear it. If you know how to make a modeless dialog box dockable, I could use them for "Pseudo dialog bars" and that would also solve my problems as they have message and data maps setup by the IDE.
Thanks again,
Will.
|
|
|
|
|
Imho, the "right" approach to this problem is to dissociate the GUI from the data.
I recommend sending a custom message to each of the dialog bars which causes them to query a central source of data (a pointer to which can be obtained via a public method of your app) and update themselves as needed. This allows the nature of the displayed information to be known only to the dialog bar(s) that display the information.
Your dialog bar(s) would do something like this:
CFooDialogBar::OnUpdateMyself()
{
CMyData* pData = ((CMyApp *) AfxGetApp())->getData();
float fValue_1 = pData->getValue_1();
int nValue_2 = pData->getValue_2();
...
}
/ravi
My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com
|
|
|
|
|
But the thing is that Dialogbars dont handle their own messages. Events are passed to the parent window, there is no class for them, theyre built on top of the main frame class i.e.
Class CMainFrame : public CFrameWnd
which receives all the events for every dialogbar.
The issue Im having is that I dont know how to address the edit boxes. Im a novice MFC programmer and all Ive ever used to populate the boxes is UpdateData.
Does someone have a code snippet that shows me how to populate the box with something (other than an int or string i.e a float)?
Thanks,
Will.
|
|
|
|
|
Who has some clues on creating WinLogon Notification Package using VS.NET 2003. Be more specific,
- what project type should I create.
- any special settings?
|
|
|
|
|
Just Create a Simple Win32 based DLL. no extra setting needed.
Be sure that you export all the function that required by winlogon.exe i.e. which you going to mention in REGISTRY
"I Think this Will Help"
[Vote One Here,.....]
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk
|
|
|
|
|
Does anyone know how to add a string to the resource string table at runtime? I have a control that takes a string resource to initialize, but I want to init things dynamically. Any ideas?
~Nitron.
ññòòïðïðB A
start
|
|
|
|
|
Nitron wrote:
Any ideas?
How about using UpdateResource(..., RT_STRING, ...)?
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
|
|
|
|
|
The string table is just another resource, you can change it with the *UpdateResource() functions (but only on NT). I have some code for modifying the table, but it's for work so I can't share it.  However check out The format of string resources[^] in RaymondC's blog, which should be a good starting point for you.
--Mike--
LINKS~! Ericahist updated! | 1ClickPicGrabber | CP SearchBar v2.0.2 | C++ Forum FAQ
Strange things are afoot at the U+004B U+20DD
|
|
|
|
|
I still wonder if he can perform this at runtime.
Won't his DLL or EXE file be locked down from writing?
An alternative would be to hook the LoadString API and watch for a 'magic' resource number and supply his own string out of an internal table of text srings. I would bet the call to get the string out of the string table the 'control' is using devolves into a call to LoadString.
|
|
|
|
|
oh... yeah, I didn't think the question was about changing his own program's string table. I don't know if that will be possible, best thing to do is try it and see what happens.
--Mike--
LINKS~! Ericahist updated! | 1ClickPicGrabber | CP SearchBar v2.0.2 | C++ Forum FAQ
Strange things are afoot at the U+004B U+20DD
|
|
|
|
|
Hello. Thiss is my first post. :->
The problem...
I'm programing a service that connect to one DB in Oracle,
using threads to with request.For wainting for a new request
i use
while (_this->running) {
db_connection = new DBConnection(param1,param2,param3);
then i connect...
try {
db_connection->DBConnect();
TRACE("Connected to DB.\n");
} catch(int) {
(ERROR)
}
Everything ok...
then read data...
try {
db_connection->StartFeeds();
TRACE("StartFeeds OK.\n"); ( NEVER Happens 
} catch(int) {
TRACE("StartFeeds Not OK.\n");
delete db_connection;
Sleep(2000);
continue;
}
}
The problem, i use TOAD to see the program run... and i see inactive programs grow and grow...
Can you help me?
Another question,
In Startfeeds i use
static text sqlstmt[] = "BEGIN :status := pck_oracle.start_feeds; END;";
but pck_oracle have
I_QUEUE_NAME VARCHAR2 (input)
,O_SUCESS OUT NUMBER (output)
,O_SUCESS_MSG OUT VARCHAR2 (output)
how do i pass the input field and recive the two output fields?
Can you explain me this?
Thanks a lot for your pacience 
|
|
|
|
|
Hi everyone!
I need to learn programming the parallel (and serial) port in C++ for Windows 2000, XP ...
I kwow that this is done by opening the port with CreateFile("LPT1"... and then I can send and receive data with WriteFile and ReadFile. 
My problem is that my WriteFile doesn't return and it waits something.
So my questions are:
Do I need to use a driver or something like that?? If so, I don't want to Download any Driver, I would like to do everything by myself :-> (System-Supplied Drivers)
Do I need to send any control settings to the port?? If so, how on earth do I do that!!!
Finally! Do I need to physically send any control signals to the port 
BIG Please, help me!
Thanks 
|
|
|
|
|
2000 and XP do not allow you to write directly to memory 0x378-0x37f (parallel port). So you do need a driver to do this for you. There are free programs out there. Try UserPort. It somewhat works for me. The driver doesn't always stay installed and you have to run this small program to reinstall it sometimes.
DirectIO is another one. Costs 30$.
|
|
|
|
|
Microsoft MSDN says that there's only necessary to use CreateFile, WriteFile and ReaFile
When I use CreateFile("\\.\COMM1"... WriteFile returns immediately, so I think it works fine.
When I use CreateFile("\\.\LPT1"... WriteFile doesn't return
Why?
|
|
|
|
|
Yes, the COM port works that way. The LPT doesn't. That's why programs such as UserPort exist. I don't remember the details why.
|
|
|
|
|
WriteFile to LPT1 will not return until the bytes have gone out to the 'device', or the DeviceRetryTimeout has expired - normally about 90 seconds.
Also, if a printer device driver is attached to the LPT1, then you might see extraneous printer spooling activity when you write directly to LPT1 as a file.
Just my experience anyway.
|
|
|
|
|
I tried to change the TimeOut value of the port with SetCommTimeOut(...) to 90 ms but WriteFile doesn't return.
I also got the packet size of the driver of the port using GetCommProperties():
64 for COM1, 0 for LPT1
Does this mean that I can't send data through LPT1?
|
|
|
|
|
SetCommTimeOut(...) only seems to work with the serial ports (COM).
I was confusing the ability to controel the parallel port with soem old entries that used to be in WN.INI - TransmissionRetryTimeout and DeviceNotSelectedTimeout
When these value were reduced, the LPT1 writes would return more quickly if the printer was offline.
GetCommProperties also only works on the COM ports.
|
|
|
|
|
mario_o82 wrote:
My problem is that my WriteFile doesn't return and it waits something.
Do you have anything connected to the parallel port? The way the port works is that the data is put on the data lines, the strobe line is pulsed, and then the PC waits for a device to acknowledge by pulsing the ACK line. If it doesn't receive the acknowledge, it doesn't complete the write, and therefore WriteFile() doesn't return.
Ryan "Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
|
|
|
|
|
 OK, I guess U know what I need to know!
Does this mean that it isn't necessary to use a driver to communicate through parallel port?
(because I don't want to use it...)
I just need to use WriteFile(...) and pulse the strobe line  ?
How can I send control signals through parallel port?
|
|
|
|
|
mario_o82 wrote:
Does this mean that it isn't necessary to use a driver to communicate through parallel port?
That's right, you can just use WriteFile() as you were doing. Just make sure that a device is connected 
mario_o82 wrote:
I just need to use WriteFile(...) and pulse the strobe line ?
WriteFile() will handle the strobe line for you
mario_o82 wrote:
How can I send control signals through parallel port?
For that you'll need to write a device driver. Usually you won't need to manipulate the control signals directly though.
Ryan "Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
|
|
|
|
|
Ryan Binns wrote:
Do you have anything connected to the parallel port?
I connected an old printer to my LPT1 and WriteFile() worked fine and the printer did something!
Now, I need to use the same progam without the printer but I don't know what to do (physically) with my port lines: WriteFile should put the data on the data lines and wait for acknowledge? Cause I can't find any data on port lines after call WriteFile. I tried to connect acknowledge line to Gnd after call WriteFile but nothing happens!
Do you know what I have to do (physically) with LPT lines?
Thank you so much.
|
|
|
|
|
|
Thank you, but I already have a DLL to access parallel port.
The problem is that some people say:
CreateFile , WriteFile... and nothing about drivers or DLLs (Like Microsoft MSDN)
and some other people say:
Use a driver, it's the only way and nothing about files!!!
So I'm realy conffused!
|
|
|
|
|
If anyone knows of a way to use the parallel port to output some signals (not to printer or some device, just set the data line high/low) then I'd really like to know because then I could get rid of the driver stuff that I'm using right now.
If you find of a way please post it.
Thanks.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
