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I knew you could. I knew that the positioning would make a difference and I considered whether to say something but I decided to assume you would figure it out.
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Hello all.
If you're reading this, then you're either very knowledgeable about Dll programming or simply curious.
I'm trying to create my own Extension DLL.
Here's my code:
//MyClass.h
#ifndef _MYCLASS_HEADER_
#define _MYCLASS_HEADER_
class AFX_CLASS_EXPORT CMyClass : public CObject
{
DECLARE_DYNCREATE(CMyClass)
public:
// constructor
CMyClass();
// destructor
~CMyClass();
// some member functions
int getNumber();
void setNumber(int num);
protected:
private:
int m_iNumber;
};
#endif
// MyClass.cpp
#include "stdafx.h"
#include <afxdllx.h>
#include "MyClass.h"
static AFX_EXTENSION_MODULE MyClassDLL = { NULL, NULL };
extern "C" BOOL APIENTRY MyDllMain(HINSTANCE hInstance,DWORD dwReason,LPVOID lpReserved)
{
if (dwReason == DLL_PROCESS_ATTACH)
{
TRACE0("MyClass.DLL Initializing!\n");
// Extension DLL one-time initialization
AfxInitExtensionModule(MyClassDLL, hInstance);
// Insert this DLL into the resource chain
new CDynLinkLibrary(MyClassDLL);
}
else if (dwReason == DLL_PROCESS_DETACH)
{
TRACE0("MyClass.DLL Terminating!\n");
AfxTermExtensionModule(MyClassDLL);
}
return TRUE; // ok
}
IMPLEMENT_DYNCREATE(CMyClass, CObject)
// my class member definitions here...
Ok. So that's my code. I want to be able to instanciate the CMyClass class from the resultant Dll.
Unfortunately, when I try to link this into a proper Dll, I get the following error:
mfcs42d.lib(dllmodul.obj) : error LNK2005: __pRawDllMain already defined in MyClass.obj
The entry-point for this Dll is specified as MyDllMain in the Project->Settings->Link->EntryPoint.
What does this error REALLY mean? What do I have to do to make it work?
It's worth noting that I have a sample from a book which is very similar to the above code and it links
to a Dll beautifully. Is there a linker option that needs to be set for my code to link properly?
Thanks for your help!
Regards,
dogBear
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How is the Myclass.obj file being linked in? For your DLL project you should only have to include the Myclass.h in some .cpp file and during the link operation have the Myclass.lib file searched.
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I have been trying to use the CListViewCtrl from "atlcontrols.h". In my class Ihave this:
CContainedWindowT<atlcontrols::clistviewctrl> m_InfoList;
Now this compiles just find and as far as I know this sould work. Now in my .cpp file I create the control by doing this.
// Initialize the CListViewCtrl
RECT Rect = {100, 100, 200, 200};
m_InfoList.Create (m_hWnd, Rect, "VersionInfoList", WS_CHILD);
m_InfoList.SetExtendedStyle (LVS_EX_GRIDLINES);
m_InfoList.ShowWindow (SW_SHOW);
This is where the problem occurs. I get an error (C2664) stating that my first parameter "m_hWnd" cannot be converted to an ATL::MessageMap. What am I doing wrong here? Any help on this would be great.
Thanks
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Ooops, here is the first line of code
CContainedWindowT "ATLControls::CListViewCtrl" m_InfoList; The greater than and less than signs should be substituted for the open and close quotes.
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have you any idea what can be wrong in this code?
it is part of printig code and only code part i'm working with bitmap
works fine under nt or 2000
under w9x displays 25 and crashs (before it long code with TextOut lives)
thanks
t!
HINSTANCE hResourceDll = ((CLayerdllApp*)AfxGetApp())->m_hAllgResourceDll;
HBITMAP hBmp = (HBITMAP)::LoadImage( hResourceDll == NULL ? AfxGetInstanceHandle() : hResourceDll,
MAKEINTRESOURCE(nImageID), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_DEFAULTSIZE
);
CBitmap StatusBitmap;
StatusBitmap.Attach(hBmp);
CDC dcMemory;
dcMemory.CreateCompatibleDC(pDC);
if(dcMemory.m_hDC == NULL)
MessageBox("22a");
CBitmap* pOldBitmap = (CBitmap*)dcMemory.SelectObject( StatusBitmap);
if(StatusBitmap.m_hObject == NULL)
MessageBox("23a");
if(pOldBitmap == NULL)
MessageBox("23b");
MessageBox("25");
dcMemory.SelectObject(pOldBitmap);
MessageBox("26");
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seems i found it!
change
CBitmap* pOldBitmap
to
HBITMAP pOldBitmap
t!
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Hello,
I wonder if there is a function like SendKeys function in VC++.
İf not, how can i send keystrokes to other applications? Do i have to use SendMessage or PostMessage functions?
Mustafa Demirhan
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Yes you should use
SendMessage or PostMessage
Something like
SendMessage(h_yourWnd,WM_KEYDOWN,...)
you should chek help for WM_KEYDOWN message to get info about parameters
regards,
/REMUS
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Yes, but be sure to send WM_KEYUP messages for each character just after each WM_KEYDOWN, maybe with some delay.
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Look up the keybd_event() and SendInput() APIs.
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Hello,
I have a big problem about modeless dialogs. When i create the dialog like
CString msg("Message");
CShowMessage *swRem=new CShowMessage(msg);
swRem->Create(IDD_SHOWMESSAGE_DIALOG);
swRem->ShowWindow(SW_SHOW);
it works fine.(This dialog gets a string as a parameter).
However, if i call it like this
CString msg("Message");
CShowMessage swRem(msg);
swRem.Create(IDD_SHOWMESSAGE_DIALOG);
swRem.ShowWindow(SW_SHOW);
it appears first but then immediately dissappers.
This is a big problem since i have to delete the new dialog if i use the first code. To delete this dialog, i pass the pointer of the dialog to itself as a parameter and the dialog deletes itself. However, this is not a good programming practice.
I need your suggestions.
Mustafa Demirhan
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Usually disapears because the scope of variable
swRem is finished.
The best way is the first solution and on WM_CLOSE message (should be more) try a "delete this"
It should work.
regards,
/REMUS
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Actually, the delete this; call should go in an override of PostNcDestroy().
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I suspect that your code :
CString msg("Message");
CShowMessage swRem(msg);
swRem.Create(IDD_SHOWMESSAGE_DIALOG);
swRem.ShowWindow(SW_SHOW);
is in some function. Once the function returns,
static local variables are automattically destroyed.
(in your case , msg and swRem).
One thing to try is to make these variable global by
putting the lines :
CString msg("Message");
CShowMessage swRem(msg);
at the top of your CPP file.
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I assume that the CShowMessage constructor stores the parameter (msg) as a member variable for itself, so making it global is not necessary and would probably not accomplish anything even if it were global; the constructor does not use the variable, it uses the parameter.
Also, C++ classes usually make it unnecessary to use global variables, so:
CShowMessage swRem(msg);
could be a member variable in the class where it is being used.
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The documentation for modeless dialogs has been inadequate so I wrote some notes that might help people. See:
http://home.socal.rr.com/samhobbs/VC/ModelessDialogs.html
In that page I reference a MS KB article that was written after I wrote my notes.
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Hello,
I wonder if i can catch all mouse and keyboard events of all windows from a hidden application in VC++/MFC. For example, i want to do special things if some key pairs are pressed (like in macro magic).
Mustafa Demirhan
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Usualy you must obtain messages from windows and you could do this by "subclassing" every process. For more informations read in MSDN.(try a serch using "Subclassing Windows" and you will find some TehnicalArticles usefull enough about this)
regards,
/REMUS
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I have certainly heard of subclassing windows but not subclassing processes. I doubt that such a thing is possible.
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You will need to use SetWindowHook. Hooking can be rather complex, so be sure to read the documentation on it carefully.
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Most all documentation relevant to SetWindowsHookEx is listed in:
http://home.socal.rr.com/samhobbs/VC/Hooks.html
It is definitely advanced stuff and I think that anyone attempting to implement such stuff need to expect to spend at least two weeks, probably a month learning what needs to be learned to be able to use the capability and related things effectively, safely and efficiently.
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I have 2 views in a splitter window, and I don't want to allow the user to move from one view to the other (by clicking) when the current view is still in edit mode.
I have try to use OnActivateView and OnKillFocus but iseems already too late.
I would appreciate any suggestion.
Thank you
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From the MSDN
"Catching hardware exceptions is still possible with the synchronous model. However, some of the unwindable objects in the function where the exception occurs may not get unwound, if the compiler judges their lifetime tracking mechanics to be unnecessary for the synchronous model."
The above statment make me feel uneasy about sync model, although it seems much better since it generates less code? Can anyone makes sense on what the above is trying to say plz?
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Do you know how to adjust the size of property sheet/page? I have 4 pages in the property sheet. However, when i show the property sheet, it is larger than what i expect (it has some spaces on the right). How can i make the pages best fit into the sheet?
Thanks all!
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