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'twas a bit tricky to find the first time i needed to, but it's suprisingly easy. Handle the LVN_ITEMCHANGING notification, and examine the uChanged member of the NM_LISTVIEW structure referenced. If the change being made is to the LVIS_SELECTED bit, then set the return value to true , otherwise false (true prevents the change from occuring). Example (this prevents selection and drophighlighting)(MFC):
void CMyDialog::OnItemchangingInMyList(NMHDR* pNMHDR, LRESULT* pResult)
{
*pResult = FALSE;
NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
if ( pNMListView->uChanged & LVIS_SELECTED || pNMListView->uChanged & LVIS_DROPHILITED )
*pResult = TRUE;
}
Shog9
--
Maybe Java is kind of like God, it "works in mysterious ways". It seems like your apps are running slowly, because in the backgroud Java is solving world hunger, or finding the cure to cancer.
- Ryan Johnston, Don't die java!
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...roll guys!
thnx
"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away" sonork: 100.18128 8028finder.com
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Hi, I need to exchange numeric and string data between several application types (Visual Basic, VBScript in web pages...) and a Visual C++ COM object; a lot of information should be transfered in any call and simple parameter exchange looks not too smart. What should I do? XML or something else?
Thanks.
"nobody knows it, but you´ve got a secret smile, and you use it only for me"
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dde still works for some apps
xml is a smart extensible way to go tho
depends on the frequency of the data exchanges ... if they are real time it might not be good ... then u would have to go named pipes or something
"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away" sonork: 100.18128 8028finder.com
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You could put them into a SAFEARRAY and pass it as one argument in a VARIANT.
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Hi,
Is it possible to insert an own icon inside an afxMessageBox, like MB_ICONINFORMATION, etc.
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Check Robert Pittenger's article Add a Help Button to a MessageBox, which replaces AfxMessageBox with a home made version using ::MessageBoxIndirect . Altough not directly supported, the source code in the article shows where you should insert the information necessary to change the predefined icon.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Can anyone tell me why the following code causes compile errors?
try
{
int foo = 1+1;
} catch(...)
{
int bar = 11;
}
error C2059: syntax error : 'catch'
error C2143: syntax error : missing ';' before '{'
I have exception handling turned on (command line option /GX) in the project settings.
Any ideas?
TIA,
Pete
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Is your source file named with a .cpp extension?
If it is .c, I think VC++ will assume it is to be
compiled as plain c code.
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Nope, it's got a .cpp extension.
What's confusing me is that it seems to have no problem with the try block, although that may be due to the way the compiler is parsing the file.
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It shouldn't be causing any error. Can you provide more info about where this piece of code is inserted?
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Well, the orginal problem was from some code in the depths of MS's STL code, namely INCLUDE\xstring....
template<class _E,
class _Tr = char_traits<_E>,
class _A = allocator<_E> >
class basic_string {
...
...
...
_TRY_BEGIN
_S = allocator.allocate(_Ns + 2, (void *)0);
_CATCH_ALL
_Ns = _N;
_S = allocator.allocate(_Ns + 2, (void *)0);
_CATCH_END
with the following defines in INCLUDE\xstddef
#define _TRY_BEGIN try {
#define _CATCH(x) } catch (x) {
#define _CATCH_ALL } catch (...) {
#define _CATCH_END }
The errors I get are:
C:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\xstring(527) : error C2059: syntax error : 'catch'
C:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\xstring(521) : while compiling class-template member function 'void __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::_Copy(unsigned int)'
C:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\xstring(527) : error C2143: syntax error : missing ';' before '{'
C:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\xstring(521) : while compiling class-template member function 'void __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::_Copy(unsigned int)'
I haven't had any problems with the STL before, but the project I'm trying to compile is a .dll for use by DirectShow, so it has some wierd project settings. I can't really explain what is wierd about them, as I don't understand them too well (the project is based on a sample from the DirectX documentation).
Does that help? Any more info you need?
Pete
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Does that help? Any more info you need?
Could you please post the beginning of the .cpp where this is included (implicitly or explicitly)?
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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#include "CenFilter.h"
#include < initguid.h >
#include "../vss/fdckid.h"
#include "CenFilter.h"
#include <initguid.h>
#include "../vss/fdckid.h"
#include "../vss/array.h"
#pragma warning(disable: 4800)
IPin * GetInPin( IBaseFilter * pFilter, int PinNum );
IPin * GetOutPin( IBaseFilter * pFilter, int PinNum );
#pragma once
#include < streams.h >
#include "../../vss/ImageProcessing.h"
#ifdef _DEBUG
#include < stdio.h >
char static gDbgStr[200];
#endif
Is this what you need?
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The code didn't seem to help much... I'm far from sure about what follows, but it's worth giving a try. Go to Project->Settings, C/C++ tab, Code Generation, enable C++ exceptions.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Already tried that
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I just noticed something. In the project settings command line options there is the following:
/D try=__try /D except=__except /D leave=__leave /D finally=__finally...
which I'm guessing redefines try to __try, etc.
Looking in MSDN, it seems that __try is a MS-specific extension for C. It also says:
"Note Structured exception handling works with Win32 for both C and C++ source files. However, it is not specifically designed for C++. You can ensure that your code is more portable by using C++ exception handling. Also, C++ exception handling is more flexible, in that it can handle exceptions of any type. For C++ programs, it is recommended that you use the new C++ exception-handling mechanism (try, catch, and throw statements). "
Maybe I'll try removing those lines in the project settings and see what happens...
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Ummm... think you've got something now. Please tell us the result. Good luck.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Hurray!
Yep, that (eventually) fixed the problems.
Thanks for the help Joaquin,
Pete
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Thanks for the help Joaquin
I didn't help much this time, it was all your job.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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well, thanks for the moral support then
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Hello,
I am trying to pull text from inside a edit box on another application.. Here is what I have tried, this only pulls the windows title bar text.. any ideas on how i can pull text from with in a edit box on another app?
CWnd* cWnd;
POINT pt;
::GetCursorPos(&pt);
cWnd = WindowFromPoint(pt);
CString strBuf;
cWnd->GetWindowText(strBuf);
MessageBox(strBuf);
Thanks
Rob
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I guess you can call ChildWindowFromPoint on the cWnd retrieved, sort of like this (warning: didn't compile it):
CWnd* cWnd;
POINT pt;
::GetCursorPos(&pt);
cWnd = WindowFromPoint(pt);
cWnd->ScreenToClient(&pt);
CWnd* cChildWnd = cWnd->ChildWindowFromPoint(pt);
CString strBuf;
cChildWnd->GetWindowText(strBuf);
MessageBox(strBuf);
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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I think the better way is to use SendMessage and OnCopyData.
1. First you search your target window handle.
2. You send a WM_COPYDATA to target window.
3. Write in your target app a function to handlw WM_COPYDATA
Code:
char szWindowName[60];
// "Target App" is the target app main window caption
CString szTargetWindowName = "Target App";
int nFound;
int nLength = strlen(szTargetWindowName);
HWND hSearchHandle;
for(hSearchHandle=::GetWindow(::GetDesktopWindow(), GW_CHILD);hSearchHandle; hSearchHandle = ::GetWindow(hSearchHandle, GW_HWNDNEXT))
{
::GetWindowText(hSearchHandle, szWindowName, 58);
szWindowName[nLength] = '\0';
nFound = lstrcmpi(szWindowName, szTargetWindowName);
if(nFound == 0)
{
CWnd pCwnd;
COPYDATASTRUCT cds;
char myStr[60];
strcpy(myStr,"Lets go.");
cds.dwData = 0;
cds.lpData = myStr;
cds.cbData = sizeof(myStr);
LONG lResult;
lResult = ::SendMessage(hSearchHandle, WM_COPYDATA,(WPARAM)&pCwnd.m_hWnd, (LPARAM)(COPYDATASTRUCT*)&cds);
}
}
-----------------------------------------
Now in your target app:
BOOL CAppADlg::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* pCopyDataStruct)
{
MessageBox((char *)pCopyDataStruct->lpData);
return CDialog::OnCopyData(pWnd, pCopyDataStruct);
}
Try it.
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The target app is not mine (It's commercial software and I don't have the source code)..
Basicly what I am trying to do is pull text from the Rich edit control on Yahoo! Messenger (The chat window. When you are talking to someone) and store the whole msg in a string.
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