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That's okay, I forget who first directed me towards that tool. It sure was helpful when I was busy trying to hack through win32 coding all that time ago.
I've just tried to compile that program in debug mode, however am presented with this "do not pass go" message:
1>c:\users\enhzflep\documents\code\test2\my3view.cpp(30): error C2440: 'static_cast' : cannot convert from 'LRESULT (__thiscall CMy3View::* )(NMHDR *,LRESULT *)' to 'BOOL (__thiscall CCmdTarget::* )(NMHDR *,LRESULT *)'
Which perhaps unsurprisingly points to the below code:
BEGIN_MESSAGE_MAP(CMy3View, CListView)
ON_NOTIFY_REFLECT_EX(LVN_COLUMNCLICK, OnColumnclick)
END_MESSAGE_MAP()
Tried it with VS2010.
Upon digging deeper, I came across this page[^] at msdn, that seems to indicate that your function OnColumnClick should have a return-type of BOOL
Hmmmmmm - just tried editing the definition of the OnColumnClick function so that it has a return type of BOOL, instead of LRESULT - that worked!
Now, finally I can see where you're coming from. Rather than the pair of messages I was seeing in my app, I can see that your app is generating 2 pairs of messages. It seems that the messages are being sent from two different controls 
Each click on a column header is giving me (amongst other messages) this:
<00323> 015A080C S WM_NOTIFY idCtrl:59680 pnmh:0040E220
<00324> 015A080C R WM_NOTIFY
<00325> 015A080C S WM_NOTIFY idCtrl: 0 pnmh:0040F96C
<00326> 015A080C R WM_NOTIFY
Perhaps an investigation into what these two controls are is in order..
Perhaps one of these may help?
(1)[^]
(2)[^] (In german, use Google translate - for some reason had trouble pasting the url of the translated page)
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enhzflep wrote: It seems that the messages are being sent from two different controls
Each click on a column header is giving me (amongst other messages) this:
< 00323> 015A080C S WM_NOTIFY idCtrl:59680 pnmh:0040E220
< 00324> 015A080C R WM_NOTIFY
< 00325> 015A080C S WM_NOTIFY idCtrl: 0 pnmh:0040F96C
< 00326> 015A080C R WM_NOTIFY
Perhaps an investigation into what these two controls are is in order..
The ID of the header control within a listview is always 0.
"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
"Some people are making such thorough preparation for rainy days that they aren't enjoying today's sunshine." - William Feather
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:slaps his head:
Of course! Thanks David.
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Hi All,
Can you help me to get clsid from GUID. I tried in google. didn't find. I'm new to cpp.
Thanks in advance..
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You have a GUID of what?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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#include <windows.h>
#include <stdio.h>
void PlayWithAccess(IUnknown *p);
void CallOpenDatabase(IDispatch *d);
int main(int argc, char* argv[])
{
HRESULT hRet;
CLSID clsid;
IUnknown *p=NULL;
hRet=CoInitialize(NULL);
if(FAILED(hRet)) {
printf("It Failed...\n");
return 1;
}
hRet=CLSIDFromProgID(L"Access.Application",&clsid);
if(FAILED(hRet)){
printf("CLSID Illegal...\n");
CoUninitialize();
return 1;
}
hRet=CoCreateInstance(&clsid, NULL, CLSCTX_ALL, &IID_IUnknown, (IUnknown **)&p);
if(FAILED(hRet)) {
printf("Create Failed....");
CoUninitialize();
return 2;
}
PlayWithAccess(p); p->lpVtbl->Release(p);
CoUninitialize();
return 0;
}
void PlayWithAccess(IUnknown *p)
{
char buf[100];
IDispatch *d=NULL;
HRESULT hret;
hret=p->lpVtbl->QueryInterface(p,&IID_IDispatch,(void **)&d);
if(FAILED(hret)){
printf("DispatchID Failed...\n");
sprintf(buf,"DispatchID failed w/err 0x%08lx", hret);
MessageBox(NULL, buf, "DispatchID", 0x10010);
return;
}
printf("Got the IDispatch Interface from Object...\n");
CallOpenDatabase(d);
printf("Enter Return:");
gets(buf);
d->lpVtbl->Release(d);
}
void CallOpenDatabase(IDispatch *d)
{
VARIANTARG args[2];
BSTR DBLocation=SysAllocString(L"D:/project/C/c_ado/connDB02/Example.mdb");
OLECHAR *MethodName=L"OpenCurrentDatabase";
DISPID dispid=0;
HRESULT hret;
DISPPARAMS params;
DISPID ids[2]={1,0};
hret=d->lpVtbl->GetIDsOfNames(d,&IID_NULL,&MethodName,1,LOCALE_USER_DEFAULT,&dispid);
printf("Got a Dispatch Identifier....%x\n",dispid);
memset(args,0,sizeof(args));
args[0].vt=VT_BOOL;
args[0].boolVal=FALSE;
args[1].vt=VT_BSTR;
args[1].bstrVal=DBLocation;
memset(¶ms,0,sizeof(params));
params.cArgs=2;
params.rgvarg=args;
hret=d->lpVtbl->Invoke(d,dispid,&IID_NULL,LOCALE_USER_DEFAULT,DISPATCH_METHOD,¶ms,NULL,NULL,NULL);
if(FAILED(hret)) {
printf("Invoke Failed....\n");
}
SysFreeString(DBLocation);
}
How to do?thanks!
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Couple of observations here
what's the problem? what error code are you getting? what sort of help do you require?
It's extremely unlikely anyone's going to copy your code, compile it and come back with the answer - sorry
A general suggestion, don't use Dispatch interfaces, they are the most unwieldy method of calling com objects, use the 'real' interface
Another one, if you have access to ATL, use CComPtr's to help wrap the pointers, and use OLE DB Client Templates to talk with Access
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thank you answer my question
I think use C to Implement the Dispatch interface.But I find it's not.
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I need to be able to stop COM port from sending the Morse code using space character from keyboard.
I use a button change event to execute the code sending function, however, I am unable to detect the keyboard since the sending function is still executing.
I tried to “insert” PostMessage custom WM_USER message but Windows still waits until the sending function is finished before recognizing the keyboard.
I am using PreTranslateMessage in MFC view.
Would adding another thread work?
I do not have much experience in multithreading, but willing to do it if it solves the problem.
Any other constructive suggestions will be appreciated.
Cheers
Vaclav
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That may work... what you have going on is a classic case of a C/C++ blocking call keeping you from doing what you need... in which case the threading should help. I would however, move the COM interactions to their own thread and stop when needed instead of leaving the blocking call in the main thread.
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OK,I'll will do multithreading. May as well learn it now and I will need to stop other types of transmission in future anyway.
Just a thought - would it be possible to "chop" the Morse code into event function for each element instead of sending the whole string of Morse characters in one event function? Probably too messy and it would still not be stoppable in the middle of dash character anyway.
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You could... don't know about how messy it would get though... depends on the total number of states you need to represent and your actual implementation.
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I got the new thread running with one problem.
Just for test I tried to intercept the keyboard via PreTranslateMessage ( in the new thread) and it did not work.
As suggested , eventually the COM stop will go into another thread, hopefully I can figure out how to communicate between threads.
For now I need to “redirect” the keyboard messages into the new thread.
They are still going ( being intercepted ) to the main thread.
I do not know how to accomplish that in MFC.
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Why are you trying to intercept keyboard messages in the new thread? Why not do that in the main thread and then task the additional thread to do the actual message sending over COM port?
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Because I still cannot get the main thread to intercept the keyboard while the sending function is executing even in the new thread.
I must be doing it wrong - here is the code snippet
// implementing multiuthreading
TRACE("\n Start the C_MorseCode_Thread thread");
m_C_MorseCode_Thread = (C_MorseCode_Thread*) AfxBeginThread(RUNTIME_CLASS(C_MorseCode_Thread));
m_C_MorseCode_Thread->m_C_Morse_Class->C_ConvertText("Test Test Test Test ",m_CFD2008Doc);
Do I need to start the execution in the new thread itself?
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You're doing that wayyyyy wrong. Read an article on AfxBeginThread() first and try again. You're still making a direct call into the method, even if it is on a different thread.
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I am making progress, however, have some minor questions.
1.How does the parameter gets into worker thread control function ?
2.Why does this function need to be defined as static?
3.Per article I am using , the worker thread can be “easily stopped”, however, since the thread sets the COM port (DTR) how do I know it will disable the DTR not just quit the thread? ( I am guessing I need to make sure it will and stopping the thread is no guarantee.)
4.If I use user-interface thread I need to create Cwnd ( Morse code class) It fails but “getLastError” reports “function completed successfully”.
I am using MFC document / view to set / control COM port (DTR) ( outputting Morse code string) and have to be able to stop it ( reset DTR via keyboard ) from the main thread.
I think I will need to use user-interface thread to get better control.
One more – if I want the user interface thread to intercept keyboard messages I am planning to intercept them in the main thread (Cview) via PreTranslateMessage and than PostThreadMessage to thread of interest. Is that the only way to accomplish this?
Thanks for reading,
Any constructive help will be as always appreciated.
Cheers Vaclav
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Hi all
In my aplication menu had a ribbon edit with spin button, I'm using this:
pEdit->EnableSpinButtons(1, 1000);
But when I increment with up arrow over 999 the value is changed to 1,000
I used GetEditText to change this value but what I have is 1
I can't change increment or ignore ',' or remove ',' from value, that is a bug with ribbon.
In old MFC application I have Spinbuttonctrl in create method I have used UDS_NOTHOUSANDS but in ribbon I don't have this option.
If somebody can help me.
Thank you
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Not sure I understand what your problem is... When you do a GetEditText on your control you only get 1 when it should be a 1000? or you don't expect to be able to reach 1000? Can you clarify?
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Seems the comma in 1,000 is his problem (ie GetEditText reads "1,000" then parseInt() or whatever stops at the comma). If there's no suitable style/attribute on the control he's using, then I guess it requires a bit of string-munching.
Cheers,
Peter
Software rusts. Simon Stephenson, ca 1994.
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The problem is comma, when I use GetEditText() returns '1' and not '1,000', I want 1000 because I'm editing a object and when reach 1000 returns to value 1, that's wrong. I don't have parseInt() method I'm using mfc c++.
thank you
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This seems like such an obvious bug... why would GetEditText() parse out the text (CString never ends on a ',' so I don't see how this bug could occur)? where are you checking your return? Maybe post your actual code and point out where you see the 1.
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Hi
Here is my code:
CMFCRibbonEdit *pEdit = DYNAMIC_DOWNCAST(CMFCRibbonEdit, MyApp->GetRibbonElement(ID_RIBBON_FORMAT_WIDTH));
if(pEdit == NULL)
return;
CDrawObj *pObj = (CDrawObj*)m_selection.GetHead();
if(pObj == NULL){
ASSERT(0);
return;
}
if(_ttoi(pEdit->GetEditText()) < 1) <==== Here GetEditText() return 1 and not 1,000 I tested with MFCOffice2007Sample and they have the same problem
return;
this->InvalObj(pObj);
int nDelta = _ttoi(pEdit->GetEditText()) - pObj->m_position.Width();
if(nDelta < GetDocument()->m_size.cx){
CRect newPosition = pObj->m_position;
newPosition.right += nDelta;
pObj->MoveTo(newPosition);
}
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See... you're problem is probably with the conversion of the CString to an integer... place pEdit->GetEditText() on its own line and look at the text returned. If its 1000, with or without a coma, its correct and the problem is with the function doing the conversion to integer. You can always take your returned CString and remove the ',' character before even attempting the conversion.
CString ret = pEdit->GetEditText();
ret.Remove(',');
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Thank you
Now is working but when I click in Up Arrow the increment shows 1,000, 1,001, 1,002 and when I change focus shows the correct value.
Thanks for all
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