List Box & Rich Edit box [modified]

[Suresh H]

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 ?? case WM_COMMAND: switch(LOWORD(wParam)) { case LBN_DBLCLK: { HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST); int iCurSel =::SendMessage(hwndListBox,LB_GETCURSEL,0,0); TCHAR FName[25]; SendMessage(hwndListBox,LB_GETTEXT,(WPARAM)iCurSel,(LPARAM)FName); CStdioFile file(FName, CFile::modeRead); DWORD dwSize = file.GetLength(); char *pBuffer = new char[dwSize + 1]; UINT uRead = file.Read(pBuffer, dwSize); pBuffer[uRead] = '\0'; file.Close(); HWND hwndRichEdit = GetDlgItem(hwnd, IDC_FILECONT); SendMessage(hwndRichEdit,EM_SETTEXTMODE, pBuffer,0); delete [] pBuffer; } Thanking you, Suresh HC -- modified at 5:37 Friday 16th February, 2007

[prasad_som]

Suresh H wrote:

SendMessage(hwndRichEdit,EM_SETTEXTMODE, pBuffer,0);

Use ,

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

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[Suresh H]

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. case LBN_DBLCLK: { MessageBox(hwnd, "DB click!","DB click event", MB_ICONEXCLAMATION | MB_OK); } 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 ??? CStdioFile file(FName, CFile::modeRead); DWORD dwSize = file.GetLength(); char *pBuffer = new char[dwSize + 1]; UINT uRead = file.Read(pBuffer, dwSize); pBuffer[uRead] = '\0'; file.Close();

[Hamid Taebi]

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.

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WhiteSky

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[Suresh H]

Hi WhiteSky, Thanks for the responce. How to check ????

[Hamid Taebi]

Insert LBS_NOTIFY when create listbox hList=CreateWindowW(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hWnd,(HMENU)IDC_SLIST,hInst,0);

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WhiteSky

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[Suresh H]

Hi whiteSky, I did that in the BOOL CALLBACK SDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam) { switch(Message) { case WM_INITDIALOG: { HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST); hwndListBox=CreateWindowW(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwndListBox,0); 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.

[Hamid Taebi]

I wanted to said insert LBS_NOTIFY when create your listbox

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WhiteSky

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[Suresh H]

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

[prasad_som]

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.

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[prasad_som]

He has created list box, shown in above post.

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[Suresh H]

Hi prasad, again i am getting error.. HWND hwndListBox = GetDlgItem(hwnd, IDC_SLIST); hwndListBox=CreateWindow(_T("LISTBOX"),NULL,LBS_NOTIFY|WS_BORDER|WS_CHILD|WS_VISIBLE,0,0,100,200,hwnd,(HMENU)IDC_SLIST,hwndListBox,0); 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.

[Suresh H]

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 ???

[Hamid Taebi]

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

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WhiteSky

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[prasad_som]

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.

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[Suresh H]

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

[Suresh H]

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.

[Hamid Taebi]

So do you have two listbox on your project?

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WhiteSky

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[Hamid Taebi]

You have two hwnds on CreateWindow? wheres HINSTANCE

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WhiteSky

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[prasad_som]

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;

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