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Well, yes you can do anything you like ... 
One of these days I'm going to think of a really clever signature.
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Please check this.
void AssignValue(ClassName* ptrValue)
{
ClassName& localObject = *ptrValue;
obj1 = localObject;
}
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Yes, I was about to suggest this, but there is an error in this code: you cannot define a reference that is not const - it has to be
const ClassName& localObject = *ptrValue;
[edit]forget what I wrote next...
Instead of your suggestion, you could just do the assignment directly:
obj = *ptrValue;
Assuming that you have a valid implementation of the assignment operator, this should work.
[/edit]
modified 25-Oct-12 7:41am.
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According to the compiler this will not work because obj1 is not a modifiable lvalue; it is an existing object, and cannot be set to something else.
One of these days I'm going to think of a really clever signature.
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That is not my understanding, unless you are using a compiler where ClassName has a very specific predefined meaning. I was assuming that was just meant as a synonym for the actual class rather than a keyword. E. g. this should work:
class foo {
int val;
public:
foo(int v) : val(v) {}
int get() const { return val;}
};
class ABC {
foo obj1;
public:
void AssignValue(foo* ptr) {
obj1 = *ptr;
}
};
At least my compiler accepts it.
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You are correct; I had to add default constructors (MS C++), but it then did what was required.
One of these days I'm going to think of a really clever signature.
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Yes, but this changes obj1, which may or may not be what the original question didn't want (if the object is expensive to copy, making it a pointer rather than object, as previously suggested, might be the better solution).
If AmbiguousName has worked more with C# or Java, where the references are implicit, working with pointers might be confusing.
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Well, not only his name is Ambigous, his inquiry is, too: it isn't clear whether his problem is that he cannot assign to obj1, or that he cannot assign it from a pointer. Anyway, the solutions have been pointed out, he just needs to pick the right one.
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Have you tried to change that line of code to this
obj1 = *ptrValue;
This will make your obj1 member variable be a copy of the object that is pointed to by ptrValue. 
Chris Meech
I am Canadian. [heard in a local bar]
In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]
posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]
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So have you tried creating an assignment operator in the ClassName class?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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AssignValue is a clear hint of what you intend to do: assign to the object obj1 the value held by the object pointed by ptrValue, hence
void AssignValue(ClassName* ptrValue)
{
obj1 = *ptrValue; }
Note you should define the ClassName assignment operator in order to make such code work.
Veni, vidi, vici.
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Much clearer answer, I think.
Chris Meech
I am Canadian. [heard in a local bar]
In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]
posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]
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Hello Friends
I was using code
void CMainFrame::OnInitMenuPopup(CMenu* a, UINT b, BOOL c)
{
FrameWnd::OnInitMenuPopUp( a,b,c);
}
And this one displaying MenuItems correctly.
Now,i trying to add icons to MenuItems.So for that I am using extenal CoolMenuManager to show up Icons with menuItems.
Here is code for this :
void CMainFrame::OnInitMenuPopup(CMenu* a, UINT b, BOOL c)
{
if(m_menuManager.InitMenuPopup(a,b,c))
FrameWnd::OnInitMenuPopUp( a,b,c);
}
Now, in this case,If i use External fn then only icons are showing up. But as now, i am calling frameWnd::OnINitMenupopup too then icons are coming and strings are not coming properly and only for some menuItems and even menuList is coming Wider covering whle screen.
Any Ideas?
Regards
Yogesh
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Without knowing what CoolMenuManager does it is impossible to even hazard a guess.
One of these days I'm going to think of a really clever signature.
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Hello
I found something interesting tht icons and text of menuItem is coming fine Except the menuList. As i click on any menu,menuList pops up and that list is coming wider,covering almost full screen.
I checked that OnMeasureItem which calculates ItemWidth and height is Having some Prob.As I Converted this from VC6 to VS2010.
BOOL CCoolMenuManager::OnMeasureItem(LPMEASUREITEMSTRUCT lpms)
{
ASSERT(lpms);
CMyItemData* pmd = (CMyItemData*)lpms->itemData;
ASSERT(pmd);
if (lpms->CtlType != ODT_MENU || !pmd->IsMyItemData())
return FALSE;
if (pmd->fType & MFT_SEPARATOR) {
lpms->itemHeight = GetSystemMetrics(SM_CYMENU)>>1;
lpms->itemWidth = 0;
} else {
CWindowDC dc(NULL); CRect rcText(0,0,0,0);
CFont* pOldFont = dc.SelectObject(GetMenuFont());
dc.DrawText(pmd->text, rcText, DT_MYSTANDARD|DT_CALCRECT);
dc.SelectObject(pOldFont);
lpms->itemHeight= max(GetSystemMetrics(SM_CYMENU), rcText.Height());
int cx = rcText.Width(); cx += CXTEXTMARGIN<<1; cx += CXGAP; cx += m_szButton.cx<<1;
cx -= GetSystemMetrics(SM_CXMENUCHECK)-1;
lpms->itemWidth = cx;
CMTRACE(_T("OnMeasureItem for '%s':\tw=%d h=%d\n"), (LPCTSTR)pmd->text,
lpms->itemWidth, lpms->itemHeight);
}
return TRUE; }
or u can refer to this link
http://www.codeforge.com/read/89577/coolmenu.cpp__html[^]
Regards
Yogesh
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I found tht Drawtext with parameter DT_CALCRECT is not returning right parameters of rectangle.
Any Ideas ?
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Sorry no, what values does it return and what values do you think it should return?
One of these days I'm going to think of a really clever signature.
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Mark, I want to research it.
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Dear All
I wrote an application some time back in Visual C++ 6 and used Chartfx for some stuff. It works fine on XP as long as you register the cfx4032.ocx and the sfxbar.dll using regsvr32 prior to running it. I now need to run the application on Win7 32 bit. The application itself seems to run but I can't get a DLLRegisterServer failed 0x80020009 error when I try to register the cfx4032.ocx and sfxbar.dll using regsvr32.
Are there newer version of the ChartFx stuff that I can use without recompiling the application or some other way that I can solve this problem. I need the application in a few weeks time for a training course and then not much there after so I am reluctant to put too much effort it.
Thanks for any help that you can provide.
Regards
Andrew Hoole
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Andrew Hoole wrote: ...but I can't get a DLLRegisterServer failed 0x80020009 error when I try to register the cfx4032.ocx and sfxbar.dll using regsvr32.
I assume you meant you do get an error.
Does regsvr32 need to be run as an administrator on the Win7 box?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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Sorry yes I certainly do get an error. Not sure about the Administrator thing I'll have to give it a go.
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Yes it would appear that running it as administrator solves the problem.
Thanks
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As mentioned in the other answer, you will need to run regsvr32 as administrator on Windows 7 to register the ocx control.
Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193
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Chartfx, first time I know it.
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Hi all:
I have run the program successfully in the Linux
but it failed in the solaris, the program will exit after creating process.
I don't known the different between the solaris and linux.
The output when running the programm:
9
10
2
3
4=3374
9
10
1=3373
The part code as following.
// unix daemon
#include <fcntl.h>
#include <sys resource.h="">
#include <stdio.h>
#include <stdlib.h>
#include <sys types.h="">
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <sys stat.h="">
#include "SPSServiceApp.h"
#define LOCKFILE "/var/run/SPSService.pid"
#define LOCKMODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
void daemonize(const char* cmd)
{
int i, fd0, fd1, fd2;
pid_t pid;
struct rlimit rl;
struct sigaction sa;
// Clear file creation mask
umask(0);
// Get maximum number of file descriptors
if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
{
fprintf(stderr, "%s: can't get file limit", cmd);
exit(1);
}
if ((pid = fork()) < 0)
{
fprintf(stderr, "%s: can't fork", cmd);
exit(1);
}
else if (pid != 0) //parent
{
printf( "1=%d\n", getpid());
//printf( "1ppid=%d\n", ggetpid());
exit(0);
}
setsid();
printf( "2\n");
// Ensure future opens won't allocate controlling TTYs.
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGHUP, &sa, NULL) < 0)
{
fprintf(stderr, "%s, can't ignore SIGHUP", cmd);
exit(1);
}
printf( "3\n");
if ((pid = fork()) < 0)
{
fprintf(stderr, "%s: can't fork", cmd);
exit(1);
}
else if (pid != 0) //parent
{
printf( "4=%d\n", getpid());
//printf( "4ppid=%d\n", ggetpid());
exit(0);
}
printf( "5\n");
if (rl.rlim_max == RLIM_INFINITY)
{
rl.rlim_max = 1024;
}
for (i = 0; i < rl.rlim_max; ++i )
{
close(i);
}
printf( "6\n");
fd0 = open("/dev/null", O_RDWR);
printf( "7\n");
fd1 = dup(0);
fd2 = dup(0);
if (fd0 != 0 || fd1 != 1 || fd2 != 2)
{
printf( "8\n");
exit(1);
}
}
int lockfile(int fd)
{
struct flock fl;
fl.l_type = F_WRLCK;
fl.l_start = 0;
fl.l_whence = SEEK_SET;
fl.l_len = 0;
return(fcntl(fd, F_SETLK, &fl));
}
int already_running(void)
{
int fd;
char buf[16];
fd = open(LOCKFILE, O_RDWR | O_CREAT, LOCKMODE);
if(fd < 0)
{
exit(1);
}
if (lockfile(fd) < 0)
{
if (errno == EACCES || errno == EAGAIN)
{
close(fd);
return(1);
}
exit(1);
}
ftruncate(fd, 0);
sprintf(buf, "%ld", (long)getpid());
write(fd, buf, strlen(buf) + 1);
return(0);
}
int main(int argc, char* argv[])
{
char* cmd;
struct sigaction sa;
printf("9\n");
if ((cmd = strrchr(argv[0], '/')) == NULL)
{
cmd = argv[0];
}
else
{
++cmd;
}
// Become a daemon
printf("10\n");
daemonize(cmd);
printf("11\n");
// Make sure only one copy of the daemon is running
if (already_running())
{
exit(1);
}
printf("12\n");
sa.sa_handler = SPSServiceApp::sig_term;
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, SIGHUP);
sa.sa_flags = 0;
if(sigaction(SIGTERM, &sa, NULL) < 0)
{
exit(1);
}
printf("13\n");
sa.sa_handler = SPSServiceApp::sig_hup;
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, SIGTERM);
sa.sa_flags = 0;
if(sigaction(SIGHUP, &sa, NULL) < 0)
{
exit(1);
}
wxEntry(argc, argv);
printf("14\n");
exit(0);
}
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