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Re: Dynamically loading one dll from another dynamically loaded dll

Blake Miller16-Feb-07 12:10

16-Feb-07 12:10

Just try not to do it in the DllMain handler for your DLL.
You can run into locking issues - Windows only wants to load a single DLL within your process at a time and process the DllMain.

List Box & Rich Edit box [modified]

Suresh H15-Feb-07 23:03

15-Feb-07 23:03

Hello all,

I have List Box and rich edit box in my Dialog IDC_SLIST & IDC_FILECONT

List Box contains the text file names , When the user double click on the list box that file content should be displayed in the rich edit box.

Can u please tell me what all the changes I have to make and how to do the double click event in Api application ??

<br />
case WM_COMMAND:<br />
switch(LOWORD(wParam))<br />
{			    <br />
	case LBN_DBLCLK:<br />
       {<br />
HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST);<br />
int iCurSel =::SendMessage(hwndListBox,LB_GETCURSEL,0,0);<br />
TCHAR FName[25];<br />
SendMessage(hwndListBox,LB_GETTEXT,(WPARAM)iCurSel,(LPARAM)FName);<br />
				<br />
<br />
	CStdioFile file(FName, CFile::modeRead);<br />
		DWORD dwSize = file.GetLength();<br />
		char *pBuffer = new char[dwSize + 1];<br />
		UINT uRead = file.Read(pBuffer, dwSize);<br />
		pBuffer[uRead] = '\0';<br />
		file.Close();<br />
              <br />
               HWND hwndRichEdit   = GetDlgItem(hwnd, IDC_FILECONT);<br />
  	       SendMessage(hwndRichEdit,EM_SETTEXTMODE, pBuffer,0);<br />
	       delete [] pBuffer;<br />
}<br />
<br />
Thanking you,<br />
Suresh HC<br />
<br />
<br />

-- modified at 5:37 Friday 16th February, 2007

Re: List Box & Rich Edit box

prasad_som15-Feb-07 23:14

15-Feb-07 23:14

Suresh H wrote:
SendMessage(hwndRichEdit,EM_SETTEXTMODE, pBuffer,0);

Use ,

::SendMessage(hwndRichEdit,WM_SETTEXT, 0,(WPARAM)pBuffer);

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: List Box & Rich Edit box

Suresh H15-Feb-07 23:26

15-Feb-07 23:26

Hi Prasad,

Thank you very much for the response.

I tried with this code but no response list box double click event is not working.

<br />
case LBN_DBLCLK:<br />
{<br />
MessageBox(hwnd, "DB click!","DB click event", MB_ICONEXCLAMATION | MB_OK);<br />
}<br />
break;

and also I am not able to use CFile , this works in MFC but I am using win 32 api, what changes I have to make ???

<br />
CStdioFile file(FName, CFile::modeRead);<br />
DWORD dwSize = file.GetLength();<br />
char *pBuffer = new char[dwSize + 1];<br />
UINT uRead = file.Read(pBuffer, dwSize);<br />
pBuffer[uRead] = '\0';<br />
file.Close();<br />

Re: List Box &amp; Rich Edit box

Hamid_RT16-Feb-07 0:30

16-Feb-07 0:30

Do you have LBS_NOTIFY on your listbox?
From the MSDN
Only a list box that has the LBS_NOTIFY style will send this message.

WhiteSky

Re: List Box &amp; Rich Edit box

Suresh H16-Feb-07 0:34

16-Feb-07 0:34

Hi WhiteSky,

Thanks for the responce.

How to check ????

Re: List Box & Rich Edit box

Hamid_RT16-Feb-07 0:44

16-Feb-07 0:44

Insert LBS_NOTIFY when create listbox

<br />
hList=CreateWindowW(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hWnd,(HMENU)IDC_SLIST,hInst,0); <br />

WhiteSky

Re: List Box & Rich Edit box

Suresh H16-Feb-07 0:53

16-Feb-07 0:53

Hi whiteSky,

I did that in the

<br />
BOOL CALLBACK SDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)<br />
{<br />
	switch(Message)<br />
	{<br />
		case WM_INITDIALOG:<br />
		{<br />
<br />
			 HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST);<br />
			 hwndListBox=CreateWindowW(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwndListBox,0);<br />
				<br />

i am getting error

error C2664: 'CreateWindowExW' : cannot convert parameter 2 from 'char [8]' to 'const unsigned short *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Error executing cl.exe.

Re: List Box & Rich Edit box

Hamid_RT16-Feb-07 1:00

16-Feb-07 1:00

I wanted to said insert LBS_NOTIFY when create your listbox

WhiteSky

Re: List Box & Rich Edit box

Suresh H16-Feb-07 1:08

16-Feb-07 1:08

WhiteSky I am using wizard for creating dialog and dialog controls , I am not using any code to create the dialog.

Re: List Box & Rich Edit box

prasad_som16-Feb-07 1:20

16-Feb-07 1:20

He has created list box, shown in above post.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: List Box & Rich Edit box

prasad_som16-Feb-07 1:18

16-Feb-07 1:18

Suresh H wrote:
hwndListBox=CreateWindowW(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwndListBox,0);

Use CreateWindow instead of CreateWindowW. You are trying to use UNICODE version in Non -UNICODE application.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: List Box & Rich Edit box

Suresh H16-Feb-07 1:21

16-Feb-07 1:21

Hi prasad, again i am getting error..

HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST);<br />
			hwndListBox=CreateWindow(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwndListBox,0);<br />

error :-

rror C2664: 'CreateWindowExA' : cannot convert parameter 11 from 'struct HWND__ *' to 'struct HINSTANCE__ *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Error executing cl.exe.

Re: List Box & Rich Edit box

Hamid_RT16-Feb-07 1:27

16-Feb-07 1:27

One question HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST);
what is it? before CreateWindow

WhiteSky

Re: List Box & Rich Edit box

Suresh H16-Feb-07 1:32

16-Feb-07 1:32

WhiteSky I am creating a handle for the list box control {IDC_SLIST }

Re: List Box & Rich Edit box

Hamid_RT16-Feb-07 1:45

16-Feb-07 1:45

So do you have two listbox on your project?

WhiteSky

Re: List Box & Rich Edit box

prasad_som16-Feb-07 1:30

16-Feb-07 1:30

Suresh H wrote:
hwndListBox=CreateWindow(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwndListBox,0);

Here, instead of handle you need to pass handle to instance. Pass instance that you will get through WinMain.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: List Box & Rich Edit box

Suresh H16-Feb-07 1:34

16-Feb-07 1:34

BOOL CALLBACK SDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
switch(Message)
{
case WM_INITDIALOG:
{

// HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST);
hwnd=CreateWindow(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwnd,0);

again error :-

error C2664: 'CreateWindowExA' : cannot convert parameter 11 from 'struct HWND__ *' to 'struct HINSTANCE__ *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Error executing cl.exe.

Re: List Box & Rich Edit box

Hamid_RT16-Feb-07 1:46

16-Feb-07 1:46

You have two hwnds on CreateWindow? wheres HINSTANCE

WhiteSky

Re: List Box & Rich Edit box

Suresh H16-Feb-07 1:26

16-Feb-07 1:26

Prasad what I am trying to do is
List box contains a list of file names , when we select any item in the list box that file contains should get added to rich edit box.

So is there any way I can do that ??? without double click trouble ???

Re: List Box & Rich Edit box

prasad_som16-Feb-07 2:15

16-Feb-07 2:15

Suresh H wrote:
List box contains a list of file names , when we select any item in the list box that file contains should get added to rich edit box.

You can handle list box double click in following way,

case WM_COMMAND:
switch(LOWORD(wParam))
case IDC_LIST1:
if (HIWORD(wParam) == LBN_DBLCLK) 
{
//double clicked 
}
break;

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: List Box & Rich Edit box

Suresh H18-Feb-07 19:12

18-Feb-07 19:12

Hi Prasad,

Thank you very much list box double click event is work. Smile | :)

Smile | :)

Re: List Box & Rich Edit box

prasad_som18-Feb-07 19:14

18-Feb-07 19:14

Welcome !

Smile | :)

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: List Box & Rich Edit box

Suresh H18-Feb-07 19:52

18-Feb-07 19:52

Hi Prasad,

One more last problem. After the double click event

I am trying to read the file contents and display the file connects in rich edit box for that I am trying this code but I am not getting any out put can u please check what changes I have to make.

<br />
const N = 1000;<br />
char cont[N];<br />
	    				<br />
ifstream fin;<br />
fin.open(FName);<br />
while(fin)<br />
{<br />
	fin.getline(cont,1000);<br />
	::SendMessage(hwndRichEdit,WM_SETTEXT, 0,(WPARAM)cont);<br />
}<br />
						<br />
fin.close();<br />

i have tryed this code in mfc this is working properly but this code does not work in win 32 api,

<br />
                CStdioFile file(str, CFile::modeRead);<br />
		DWORD dwSize = file.GetLength();<br />
		char *pBuffer = new char[dwSize + 1];<br />
		UINT uRead = file.Read(pBuffer, dwSize);<br />
		pBuffer[uRead] = '\0';<br />
		file.Close();<br />
		::SendMessage(hwndRichEdit,WM_SETTEXT, 0,(WPARAM)pBuffer);<br />
		delete [] pBuffer;

Re: List Box & Rich Edit box

prasad_som18-Feb-07 20:09

18-Feb-07 20:09

Suresh H wrote:
const N = 1000;
char cont[N];

ifstream fin;
fin.open(FName);
while(fin)
{
fin.getline(cont,1000);
::SendMessage(hwndRichEdit,WM_SETTEXT, 0,(WPARAM)cont);
}

fin.close();

Here, are you succesfully able to open the file ?
Initialize char array like this,

char cont[N] = { '\0'};

Prasad
Notifier using ATL | Operator new[],delete[][^]

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