I decided (after many years) to re-compile my project using MFC as a shared DLL rather than statically.
I did a full rebuild and encountered several errors with inconsistent dll linkage. The class in question is defined in the header like this:
class AFX_EXT_CLASS CFileVersionInfo
{
}How to compile?
Hello everybody
I have a small problem and I would like to ask for some help.
I inherited a small VS solution which has 2 sub-projects. The first sub-project should return an executable file and the other one a .dll file. I compile each one separately and in fact the executable file appears but when I build the other one no dll file is to be found!
After being built successfully I did a file search for the dll but it isn't anywhere.
I checked each sub-project's properties and everything seems to be ok (albeit ok to a beginner like me doesn't mean much!)
I should also add that this had been built on VS 6 a few years ago without any issues so I don't believe that there's something wrong with the code itself.
Here are some printscreens :
Any ideas what I am doing wrong?
If there's any further information that I can provide just let me know!
thanks a lot!! :-)
I'm working on a feature that opens Windows Apps in the Microsoft Store from an unmanaged application.
As far as I know, the correct way to programmatically interact with the Store is through URI's descried in
docs.microsoft.com/en-us/windows/uwp/launch-resume/launch-store-app
This works well on Windows 10, however the same URI's seem to only launch the Store as if without any arguments under Windows 8/8.1 (ex. start ms-windows-store://settings just launches the store without navigating to the settings page, the same thing happens when I try to open an app's page.)
Are there any working alternatives for opening apps in the store under 8/8.1?
I've attempted launching "Microsoft.WindowsStore_8wekyb3d8bbwe" through the IApplicationActivationManager interface however I don't know how to format the arguments so that the store recognizes them, currently I'm only able to open the store.
Hi,
Originally I think CFile::Close will flush all unwritten data into the disk, then close the file handle gracefully. However, after checking the source code for CFile::Close, I find the code below:
void CFile::Close()So it does not invoke CFile::Flush to flush the buffer at all. The only chance is ::CloseHandle. But in document for ::CloseHandle at https://docs.microsoft.com/en-us/windows/win32/api/handleapi/nf-handleapi-closehandle , it does not mention that the function will flush the buffer as well.
Therefore, if some data are in the written buffer, then CFile::Close will just ignore them and close the file, which makes data losses. Also such a behavior is not expected. Very strange.
MDI MFC application . Trying to migrate to OpenGL.
wglMakeCurrent fails with error 2004 when different views are activated. Each CView object has its own DC and rendering context.
No idea how to solve.
Thanks
Hello All,
In my windows desktop based application we are creating a C++ service. If the service is running then only the VC++ application executable that is consuming the service is working.
This service is showing under services.msc
I wanted to know what is the purpose of creating a C++ service?
I navigate through the code and understood that we are using the service to add some stuff to the registry. In the code we are using OpenSCManager function and it is to open a handle to the service control manager database. If it is valid handle then we are
creating the service using CreateService. Is my understanding is correct?
If it is to add some entries to the registry do we really need to create a service?
Below is the service related code snippet.
ErrCode RegisterService (LPCTSTR aServicePath, LPCTSTR aServiceName, LPCTSTR aDisplayName, LPCTSTR aServiceDescription)
{
ErrCode err;
//Just in case the service is installed allready.
UnRegisterService (aServiceName);
//Get a handle to the Service Manager.
SC_HANDLE schSCManager = OpenSCManager(NULL, NULL,SC_MANAGER_ALL_ACCESS);
if (schSCManager)
{
//Install the new service
SC_HANDLE schService = CreateService(schSCManager,
aServiceName,
aDisplayName,
SERVICE_ALL_ACCESS,
SERVICE_WIN32_OWN_PROCESS,// PCPE-663 | SERVICE_INTERACTIVE_PROCESS,
SERVICE_AUTO_START,
SERVICE_ERROR_NORMAL,
aServicePath,
NULL,
NULL,
NULL,
NULL,
NULL);
if (schService)
{
// Give the service a description ...
SERVICE_DESCRIPTION desc;
desc.lpDescription = LPTSTR(aServiceDescription);
ChangeServiceConfig2 (schService, SERVICE_CONFIG_DESCRIPTION, &desc);
if (StartService(schService, 0, NULL))
{
err = ERR_SUCCESS;
}
CloseServiceHandle(schService);
}
CloseServiceHandle(schSCManager);
}
else
{
assert("RegisterService()" == NULL); //OpenSCManager failed.
}
return err;
}
Regards
It is VS 2019 Community 2019 16.1.6, Win 7 Pro SP1, VC++ Dialog-based application.
Among Project Properties: Win SDK 10.0.17763.0; Platform Tools VS 2019 (142); Use MFC as Shared Dll; Use Unicode Character Set.
In my CDialogEx I have a standard CEdit added to my dialog via Resource Editor. The "Want Return" option is set to "True."
All is compile and built and run just fine.
But the only problem I have:: When the user is entering characters from KBD into the CEdit, the "Enter" Key pressing terminates the app. I expect, because of "Want Return", the "Enter" should be swallowed by CEdit control and does not terminate the App
What is my error and how the user can notify the CEdit that he/she ended entering characters into CEdit?
Thanks.
Hi,
I am writing a function void MyFun(CFile& File), which receive a CFile object(which is already opened). In MyFun, I need to check whether I can write data to File. How to do that?
Thanks
I tested methods of Suffix Array creating, naive method, although using quick sort was more cache friendly than SA-IS.
SA-IS for 150 kB block is even 4x faster than naive, but for 10 MB block is only 1.1 x faster, although should be linear compared to n*log(n) naive. Probably it is processor cache problem. How change
it to "external"? For small blocks would be a bit slower, but for large blocks faster (?). How determine processor cache size? Is any tool for cache analyzing?
Hi guys,
Recently, There were problems have plagued me for a long time. I have not a permission to show my code in full in term of some restrications from my company. Nonetheless, I can just demonstrate simply what codes in my project, one of which were written in below section:
#import "xxx.idl"
#import "xxx.idl"
[As the above stuff you saw, This file have suffix name .idl. And, this file can be fine compiled by vs2013, However, it's surprising that the same code can't be compiled by vs2017 well. I can't understand what problems the vs2017 encounter. The error information can be reported in following format:
Code: Description:
MIDL 2813 unexpected end of file found
can someone supply information to fix this issue?
thanks,guys!
I'v got 3 files from a SW provider, idkit.h, sample.cpp and idkit.lib. I include sample.cpp in my a MFC project. I did a little trivial modification. I am sure below:
1. From Linker --> General --> Additional Library Directories, the folder containing idkit.lib was included.
2. From Linker --> Advanced --> Import Library, the idkit.lib was included
I built it, passing compilation, but getting below linking failure. How come?
Sampe.cpp and idkit.h are as below. I removed some unimportant snippet.
Severity Code Description Project File Line Suppression State
Error LNK2019 unresolved external symbol __imp_IEngine_InitModule referenced in function "int __cdecl match(void)" (?match@@YAHXZ) MFCApplication3 D:\programs\IDKit\face-match\MFCApplication3\MFCApplication3Dlg.obj 1
Severity Code Description Project File Line Suppression State
Error LNK2019 unresolved external symbol __imp_IEngine_TerminateModule referenced in function "int __cdecl match(void)" (?match@@YAHXZ) MFCApplication3 D:\programs\IDKit\face-match\MFCApplication3\MFCApplication3Dlg.obj 1
….
Sample.cpp
ret = IEngine_TerminateModule();
CHECK_ERROR("IEngine_TerminateModule", ret);
}
=============================================
Idkit.h
Hi,
I need to execute 10 commands(API) when checking the checkbox. I need to log each API's result in the richeditctrl immediately each api is executed.It will take 1 minute to execute these 10 commands
For that I am calling postmessage on checkbox click event. I am facing below problems.
void CUtilityDlg::OnBnClickedCheck1()
{
if(m_ctrlAutomate.GetCheck())
{
PostMessage(WM_USER_MY_OWN_MESSAGE);
}
}
LRESULT CUtilityDlg::OnUserDefinedMessage(WPARAM wParam, LPARAM lParam)
{
Automate();
return 0;
}Hello,
I have a pretty old project that was running fine on older windows versions (XP). This project uses odbc to connect to ms access data base. No the goal is to make it run on windows 10 without modifying it too much if possible.
I have Windows 10 1803 (X64), MS Access 2016 (16.0.4819 32 bit)
When I try to compile this project it gives me the following error when I try to build:
fatal error C1083: Cannot open type library file: 'msjro.dll': No such file or directory.
when I double click on this entry on output console iit takes me to this line:
#import <msjro.dll> rename("EOF", "adoEOF")
msjro.dll windows search gives: program files (x86)/common files/system/ado/msjro.dll
I added \Program Files (x86)\Common Files\system\ado to Additional include directories and then the following error pop upped:
<project path>\debug\msjro.tlh(198): error C3646: 'ConflictTables': unknown override specifier
<project path>\debug\msjro.tlh(198): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
<project path>\debug\msjro.tlh(226): error C3646: 'GetConflictTables': unknown override specifier
<project path>\debug\msjro.tlh(226): error C2059: syntax error: '('
<project path>\debug\msjro.tlh(226): error C2238: unexpected token(s) preceding ';'
<project path>\debug\msjro.tli(111): error C2039: 'GetConflictTables': is not a member of 'JRO::IReplica'
<project path>\debug\msjro.tlh(187): note: see declaration of 'JRO::IReplica'
<project path>\debug\msjro.tli(111): error C7525: inline variables require at least '/std:c++17'
<project path>\debug\msjro.tli(111): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
<project path>\debug\msjro.tli(111): error C2146: syntax error: missing ';' before identifier 'GetConflictTables'
<project path>\debug\msjro.tli(113): error C3861: 'get_ConflictTables': identifier not found
<project path>\debug\msjro.tli(114): error C2355: 'this': can only be referenced inside non-static member functions or non-static data member initializers
<project path>\debug\msjro.tli(114): error C2660: '_com_issue_errorex': function does not take 1 arguments
1>c:\program files (x86)\microsoft visual studio\2017\enterprise\vc\tools\msvc\14.16.27023\include\comdef.h(229): note: see declaration of '_com_issue_errorex'
<project path>\debug\msjro.tli(115): error C2064: term does not evaluate to a function taking 2 arguments
<project path>\debug\msjro.tli(115): warning C4508: 'JRO::GetConflictTables': function should return a value; 'void' return type assumed
<project path>\debug\msjro.tli(116): error C2617: 'JRO::GetConflictTables': inconsistent return statement
<project path>\debug\msjro.tli(111): note: see declaration of 'JRO::GetConflictTables'
Any ideas how to fix this?
Hi,
I'm using a CHTMLView component in my c++ application, and I want to prevent the user from navigating back or forward. Is there a way to do that? I tried setting the "Navigate2" options "navNoHistory | navOpenInNewTap | navNoReadFromCache | navNoWriteToCache" but that didn't work.
I'm migrating my project from VS2010 to VS2017. When I trying to build my project I'm getting error, LNK1104 Cannot open file 'mfc100.lib'.
My project's Platform ToolSet is set toVisual Studio 2017(v141).
I set Use of MFC to Use MFC in a Shared DLL.
Please help me find out a proper solution to fix this.
Thanks in advance.
Hello,
I have a CTreeCtrl which is fully expanded on creation (the root is expanded and all tree branches are expanded). I have set "Has Buttons" to false.
When I (double-)click on a tree branch item, the tree branch is expanded or closed. And when I select a branch, some other branches are closed.
I want to show the fully expanded tree every time. I don't want that the ctrl closes a branch.
How to achieve it?
Thanks for help,
Guido
Hi,
I have a UTF-8 file(File1), which contains the following data when viewing it in hexidecimal editor UltraEdit:
0x20 0xE2 0x80 0x93 0x3C 0x2F
However, my program is Unicode-based, so I need to read the contents and convert them into Unicode string.
I use the following code:
CFile File;
CByteArray Data;
if (File.Open(strFileName, CFile::modeRead | CFile::shareDenyWrite | CFile::typeBinary))
{
// Prepare the data buffer
Data.SetSize((INT_PTR)File.GetLength());
::memset(Data.GetData(), 0, Data.GetSize());
// Read all data to the buffer
File.SeekToBegin();
File.Read(Data.GetData(), Data.GetSize());
File.Close();
// Convert the buffer to the string
strData = CString((LPCSTR)Data.GetData(), Data.GetSize());
returnTRUE;
}
else
returnFALSE;
Then after getting the strData, to check if the data are correct, I try to save the strData into another new Unicode file(File2), as below:
CFile File;
if (File.Open(strNewFileName, CFile::modeCreate | CFile::modeWrite | CFile::shareExclusive | CFile::typeBinary))
{
// Write the strData to the file
File.Write((LPCTSTR)strData, strData.GetLength() * sizeof(TCHAR));
File.Close();
}
After opening the new Unicode file, I see the Unicode characters as below:
0x20 0x00 0x25 0x92 0x3F 0x00 0x2F 00
However, if I open File1 in UltraEdit directly, then using its menu function "Conversion" -> "UTF8->Unicode" feature. I will get a new file(File3), in File 3, the Unicode characters will be:
0x20 0x00 0x13 0x20 0x3C 0x00 0x2F 00
I find File2 and File3 have some different bytes, though they are both Unicode files. Therefore, I just wonder if my conversion has some problems?
Thanks
I keep getting a message when windows starts up saying The code execution cannot proceed because MSVCP110.d11 was not found reinstalling program may fix this problem What is the best thing to do
Regards Len
The following code, extracted from a larger program, seems to work correctly. But there is no sign of the output file anywhere.
Can anyone see what needs to be changed to cure this problem?
C++ PROGRAM:
char *in_filename ;
char *out_filename ;
// The in_filename and the out_filename have the command arguments as their values:
// "C:\Storage\JGW\Research\Dev\2018plus\LANGS\LANG1\LANG1\Debug\in\gr1.txt"
// "C:\Storage\JGW\Research\Dev\2018plus\LANGS\LANG1\LANG1\Debug\out\o_gr1.txt"
ifstream ifile("in_filename",ios::ate); // Leaving off the quote marks leads to an assertion failure.
// The input part of the larger program seems to work correctly.
// But there is no sign of the output file anywhere when the program exits.
ofstream ofile("out_filename",ios::ate); // Leaving off the quote marks leads to an assertion failure.
ofile.open(out_filename) ;
if(ofile.is_open() == false)
abort_run("Unable to open output file.\n") ;
// Test message
ofile << "Test message." ;
ofile.close();
exit(0) ;
GerryWolff