C / C++ / MFC

Re: Connect to bluetooth service watch and read HR data

21-Sep-21 1:42

Well who'd a thought: https://developer.garmin.com/[^].

David Crow21-Sep-21 3:44

David Crow

21-Sep-21 3:44

That almost looks like tools one could use to read data from a Garmin device. I wonder if it would help the OP!

Control PDF from c ++

danekbb10-Sep-21 2:57

danekbb

10-Sep-21 2:57

I wanted to navigate to a page in PDF file.
Theoretically, this could be done with ShellExecute (NULL, "open", "Path \ File", param1, NULL, SW_NORMAL), where
param1 = "# page = 123" or "/ A page = 123" or "/ A \" page = 123 \ ""; then the PDF file is opened, but the page is not activated.
You could do the same thing by opening PDF and then navigating to the page. It's a good idea, but it has the disadvantage that I don't know either.

Does anyone know?

Thanks for the answers

Re: Control PDF from c ++

Richard MacCutchan10-Sep-21 3:22

Re: Control PDF from c ++

10-Sep-21 3:22

It will depend on which application actually opens the PDF file.

Victor Nijegorodov10-Sep-21 5:23

Victor Nijegorodov

10-Sep-21 5:23

I posted you a working example in this post: Control PDF from c ++

Re: Control PDF from c ++

Dave Kreskowiak10-Sep-21 6:28

Dave Kreskowiak

10-Sep-21 6:28

You don't "control the PDF". You have to control the application that is opening and displaying the PDF file.

How you do that depends entirely on the application you're using to display the PDF. There's probably going to be applications where you don't have that control.

You can do it if the machine has Acrobat Reader installed it, which is what the previous answer is using.

Asking questions is a skill
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Seriously, go read these articles.

Dave Kreskowiak

Other program access and data extraction

cocaya7-Sep-21 17:44

cocaya

7-Sep-21 17:44

Hello.

I'm trying to get text data from another program.

The window handle was found.
Please check the image link.
CLICK Here - Attach Image Link

But I'm not sure what to do next.

Should I use something similar to the GetDlgCtrlID method?
I do not know.

The return is -1.

Please advise.
thank you.

Re: Other program access and data extraction

Victor Nijegorodov7-Sep-21 22:17

Victor Nijegorodov

7-Sep-21 22:17

There are similar questions/discussions in different forums. Have a look at python - Need a way to access control in a window with control id using pywinauto - Stack Overflow

Re: Other program access and data extraction

Richard MacCutchan7-Sep-21 23:15

Re: Other program access and data extraction (help me)

7-Sep-21 23:15

cocaya wrote:
the GetDlgCtrlID method

That will only return a valid id if the handle is that of an actual dialog control. But even if it does, the id will not be of any use.

To get the text of a Window in another process, you must send the WM_GETTEXT message (Winuser.h) - Win32 apps | Microsoft Docs[^] to it. But you first need to know that the Window contains valid text.

cocaya8-Sep-21 2:55

cocaya

8-Sep-21 2:55

*CLICK here : Attach Image Link

handle => 0x001229e8
GetControlText(IntPtr hWnd){

// Get the size of the string required to hold the window title (including trailing null.)
Int32 titleSize = SendMessage((int)hWnd, WM_GETTEXTLENGTH, 0, 0).ToInt32();

// If titleSize is 0, there is no title so return an empty string (or null)
if (titleSize == 0)
return String.Empty;

StringBuilder title = new StringBuilder(titleSize + 1);

SendMessage(hWnd, (int)WM_GETTEXT, title.Capacity, title);

return title.ToString();
}

Thanks reply, but

When this function is executed, String.Empty is returned.
How can I get grid table values??

I desperately want to solve it.
please help me..

Re: Other program access and data extraction (help me)

Richard MacCutchan8-Sep-21 3:10

Re: Other program access and data extraction (help me)

8-Sep-21 3:10

It depends on how that grid controls its content. A simple WM_GETTEXT message is unlikely to return anything. If it is a Windows ListView then you could try some of the LVM_GETxxx messages: List View Messages - Win32 apps | Microsoft Docs[^].

cocaya8-Sep-21 18:42

cocaya

8-Sep-21 18:42

Thanks for the advice.

I tried the following, but the return value is 0.
int nTextLength = SendMessage(hwnd6, WM_GETTEXTLENGTH, 0, 0).ToInt32();

How should I approach it?ㅜ.ㅜ
CLICK Here : MS inspect.exe capture.

Re: Other program access and data extraction (help me)

Richard MacCutchan8-Sep-21 22:59

What is makegetstatuscmd() command function?

8-Sep-21 22:59

1. Why are you calling ToInt32 on a value that is already an int type?
2. If WM_GETTEXTLENGTH returns zero, then that tells you the Window is not a Text type. As I said yesterday, if the contents are shown in a grid then you need to find out what actual control it is, and use the control's methods to extract the contents.

Md Mubdiul Hasan 30-Aug-21 15:09

30-Aug-21 15:09

Hi there,
I found difficulties to understand the following function,

C++

void MakeGetStatusCMD(void)

Under this function, float type WORDS and size are defined .
This function is using for UART/MODEBUS communication protocol. Its using to know the status of receiving data in main dsp control board. Variables are defined for size of DSP Registers and counter of register.

At last, its written

<pre lang="C++">SendDSPCMD()

modified 30-Aug-21 21:41pm.

_Flaviu30-Aug-21 22:32

_Flaviu

30-Aug-21 22:32

I guess you'll need to deliver more details about this

MakeGetStatusCMD()

function (his body, anything), because we don't know anything about this

Md Mubdiul Hasan 30-Aug-21 23:47

30-Aug-21 23:47

I guess you'll need to deliver more details about this
MakeGetStatusCMD()
function (his body, anything), because we don't know anything about this

Its a command type function. Lets say DSP is master and another type of MCU is slave.
We are trying to make bridge among them. Additionally, this Modebus protocol has interface with API and display.It may have remote control piping. Slave is host here.

This file where I got this function has included register and device functioning header file.

Those can be describe here,

BOOL SysUsartBusy;//combining the functions of a data bus to carry information, an address bus to determine where it should be sent or read from, and a control bus to determine its operation.
WORD SysCmdTimeoutCount;//Byte and Word Swapping in Modbus, proposes a method to timeout a long-running command .
WORD SysCmdAckDelayCount;// system acknowledged, puting a delay count 
WORD SysCmdDelayCount; // delay will counted 
//The tail() method is utilized to return a new queue that consists of all the elements except the first one.
BYTE CmdQueueHeader, CmdQueueTail;// In modbus data stream at first (flag, adress, control) belongs from a header file,Returns the queue of upcoming commands for the specified device. 
BYTE CmdQueue[CMD_QUEUE_SIZE];//Queue is a function, may be its use for checking 1st and last data within a particular size.

jeron131-Aug-21 5:33

jeron1

31-Aug-21 5:33

Do you have the source code for the MakeGetStatusCMD() function?

"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle

Md Mubdiul Hasan 31-Aug-21 14:48

31-Aug-21 14:48

Dear Sir Jeron,
Really I did not figure out what you want to explain.
Do you mean its Query command ? For API purpose those command work to identify device?
Does it work like windo command ?

Quote:
CMD commands are an antiquated and mostly unnecessary tool from an era of text-based input

Kindly talk about facts that the messages are issued using Message Queue interface call. Command queue header files need to explain.

jeron11-Sep-21 5:03

jeron1

1-Sep-21 5:03

Quote:
Under this function, float type WORDS and size are defined .

Do you mean "inside' this function? If so, do you know what is inside this function?
Is this a library function for a certain MCU? If so, is there any documentation of this function?
Your initial question is quite unclear, at least to me.

Md Mubdiul Hasan 1-Sep-21 17:39

Requirements of display filtering in power electronics data

1-Sep-21 17:39

Thank you. Did you see my second reply? I think this information is enough to understand what would be the function. This project is tied on QT5 with STM32 and TI DSP F2806x. widget.h Example File | Qt OpenGL[^]
This project contains IAR,ECILPSE IDE.
A display is added in ST slave, it has APP files. TCP server is involved here. Server is updating the information about DSP register. Its sending modebus Queue initiating this funtion,

Quote:
void CModebusTCP::OnReceived(BYTE *pData, int nSize)

Under the function the variables are,

Quote:
void MakeGetStatusCMD(void)
{
WORD *pWord;
float *pFloat;
WORD Size;

pWord = (WORD*)Uart1.TxData;

pWord[0] = DSP_CMD_GETTATUS;
pWord[1] = g_AdjustOutput;
pWord[2] = g_RunMode;
pWord[3] = g_Run;

Md Mubdiul Hasan 19-Aug-21 20:42

Re: Requirements of display filtering in power electronics data

19-Aug-21 20:42

I am trying to debug a complex firmware CCS V.5 program with compiler V.6.0.2. My control code has access with a PC program. All registers of my application is customized. My goal is to display particular channel voltage, but logically mathematical code should be understand. Here we go

void DispFiltering1(void)
{
    float       k;
    float in_data;

    ///////////////////////////////////////////////////////////////////
    in_data = Register[CH1_VOLTAGE] * 1000 - Vfilt_16;
    dVfilt_16 = in_data + (dVfilt_16 * 0.5f);
    idvfilt_16 += dVfilt_16;

    k = (int)(idvfilt_16 * timeconst_inverse_16);
    idvfilt_16 -= k * timeconst_16;


    if(k < -slewrate_16) Vfilt_16 -= slewrate_16;
    else if(k > slewrate_16) Vfilt_16 += slewrate_16;
    else Vfilt_16 += k;

    Register[DISP_CH1_VOLTAGE] = Vfilt_16 * 0.001;

    ///////////////////////////////////////////////////////////////////
    in_data = Register[CH1_CURRENT] * 1000 - Vfilt_17;
    dVfilt_17= in_data + (dVfilt_17 * 0.5f);
    idvfilt_17 += dVfilt_17;

    k = (int)(idvfilt_17 * timeconst_inverse_17);
    idvfilt_17 -= k * timeconst_17;


    if(k < -slewrate_17) Vfilt_17 -= slewrate_17;
    else if(k > slewrate_17) Vfilt_17 += slewrate_17;
    else Vfilt_17 += k;

    Register[DISP_CH1_CURRENT] = Vfilt_17 * 0.001;
}

I will be happy if you can explain why filtering, slewrate and time constant is necessary here? Discuss kindly.

Richard MacCutchan19-Aug-21 22:33