C / C++ / MFC Discussion Boards

Re: memory leak!

John M. Drescher3-Jul-03 10:31

John M. Drescher

3-Jul-03 10:31

MemLeak wrote:
do I get back the memory after the app close

In most cases you should.

John

Enabling buttons

Zak_3-Jul-03 10:15

Zak_

3-Jul-03 10:15

Hi,

I was wondering how to changed the enabled/disabled state of a command button by using messages. Im not using MFC for this so I need to know the proper message to send to it and how to set up the data that goes with it (if it can be done this way).

Thanks in advance

Zak

Re: Enabling buttons

valikac3-Jul-03 10:26

valikac

3-Jul-03 10:26

One solution is SendMessage().

SendMessage(hButton, WM_ENABLE, static_cast<wparam>(/*TRUE or FALSE*/), 0);

Kuphryn

Re: Enabling buttons

Zedd3-Jul-03 11:18

Zedd

3-Jul-03 11:18

If you mean buttons on a dialogbox, you can do the following:

GetDlgItem(IDC_NAMEOFBUTTON)->EnableWindow(TRUE);

TRUE enables, FALSE disables (which is logic)

You cannaot only use this for buttons but for every kind of control (radio buttons, text fields,...

Zedd

Getting the output of 'rsh'command from Unix back to application in windows

JaisonCodeMan3-Jul-03 10:07

JaisonCodeMan

3-Jul-03 10:07

Hi I am developing a Windows GUI that interacts with two Unix servers.I aim to transfer files between these two servers.And I achieve this from Windows by using the 'rsh' command.I basically call a shell script remotely that will transfer the file from one server to the other.My problem is how I can be able to route any output from my script program in Unix back to my program in windows that can tell me whether I was succesful or whether the file already exists there??Isit possible to route the output of a SHELL script in Unix back to a windows conrol or store it in a string??I would eagerly like some help fast. Big Grin | :-D

Thanks

Jesus Loves You

Can I query Delphi GUI APP controls from inside C++ DLL?

ajkirkle3-Jul-03 9:40

ajkirkle

3-Jul-03 9:40

Please help - I am trying to get some control/window data from a GUI written in Delphi, from inside a Hook application I have written in C++. The problem is that I don't know how to get some of the data from these Delphi controls. I used pretty standard way to hook the GUI app, using:

SetWindowsHookEx(WH_CBT, (HOOKPROC)msghook, hInst, 0);

Within my hook processing function (msghook), I have:

case HCBT_ACTIVATE:
if(m_szModule[0] == '\0')
GetProcessName(m_szModule);

char szClassName[100];
GetClassName(hWnd, szClassName, sizeof(szClassName));

sprintf(buf, "MyHookApp::msghook - ProcessName [%s] ClassName [%s]", m_szModule, szClassName);
logFile.LogMessage(buf);

if ((0== stricmp(m_szModule, "GUIApp.exe")))
{ // logs all child windows
EnumChildWindows(hWnd, EnumChildProc, 0);
}
--------------------------------------------
// Call back function that will retrieve and log Window ID,
// Window Class Name, and the WindowText
BOOL CALLBACK EnumChildProc(HWND hwndChild, LPARAM lParam)
{

int idChild = GetWindowLong(hwndChild, GWL_ID);
char szText[100];
char szClassName[100];
char szBuf[1024];

::GetWindowText(hwndChild, szText, sizeof(szText));
GetClassName(hwndChild, szClassName, sizeof(szClassName));
sprintf(szBuf, "**** id:%02d, ClassName:%s, [%s]", idChild, szClassName, szText);
logFile.LogMessage(szBuf);
return TRUE;
}
--------------------------------------------
The problem is that the output revealed that all the controls of this GUI app do not have Text assosciated with them. GetWindowText returned empty strings.

07/03 06:05:16: **** id:262484, ClassName:TPanel, []
07/03 06:05:16: **** id:852418, ClassName:TListBox, []
07/03 06:05:16: **** id:197008, ClassName:THeaderControl, []
07/03 06:05:16: **** id:197176, ClassName:TSortGrid, []
07/03 06:05:16: **** id:197104, ClassName:TEdit, []
07/03 06:05:16: **** id:197084, ClassName:TPanel, []
07/03 06:05:16: **** id:197094, ClassName:TPanel, [3/07/03 6:04]

As you can see above, only one had any text associated with it. I know that all of these controls do have text. I also hooked the TextOutA and TextOutW API's to see what was being drawn on the screen. I will see things like:

07/03 06:05:16: W(0,0)Text on Control1
07/03 06:05:16: W(0,0)Text on Control2
07/03 06:05:16: W(0,0)Text on Control3

So, basically the string "Text on Control1" is the text that appears on the first TPanel from above (id:262484). Is there any way that I can query the TPanel/Window to find this information?

I really appreciate any help anyone can provide. Confused | :confused:

Help...msvcrtd.obj missing

DaveE9th3-Jul-03 7:56

DaveE9th

3-Jul-03 7:56

I'm getting the error message below. I'm working on an MFC project. I am using the DLL library. I have read the FAQ area of the forum. I tried to link to the msvcrtd library in settings/link, but it then said that the msvcrtd.obj was missing. Anybody? Where might the missing object be?
Cool | :cool:

--------------------Configuration: Exodus - Win32 Debug--------------------
Linking...
LINK : fatal error LNK1104: cannot open file "msvcrtd.obj"
Error executing link.exe.

Exodus.exe - 1 error(s), 0 warning(s)

If I don't link to the msvcrtd library from settings/link, then I get the following 5 errors...so I must be getting closer to solving this...hopefully

--------------------Configuration: Exodus - Win32 Debug--------------------
Linking...
Exodus.obj : error LNK2001: unresolved external symbol "public: static struct CRuntimeClass const CExodusDoc::classCExodusDoc" (?classCExodusDoc@CExodusDoc@@2UCRuntimeClass@@B)
Exodus.obj : error LNK2001: unresolved external symbol "public: static struct CRuntimeClass const CMainFrame::classCMainFrame" (?classCMainFrame@CMainFrame@@2UCRuntimeClass@@B)
Exodus.obj : error LNK2001: unresolved external symbol "public: static struct CRuntimeClass const CExodusView::classCExodusView" (?classCExodusView@CExodusView@@2UCRuntimeClass@@B)
msvcrtd.lib(crtexe.obj) : error LNK2001: unresolved external symbol _main
Debug/Exodus.exe : fatal error LNK1120: 4 unresolved externals
Error executing link.exe.

Exodus.exe - 5 error(s), 0 warning(s)

Thanks