List Box & Rich Edit box [modified]

[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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[David Crow]

Suresh H wrote:

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);

This is Win32 code. Since you have an MFC application, based on the presence of CStdioFile, take advantage of it. Use ClassWizard to create a LBN_DBLCLK handler. In that handler, call the listbox's GetCurSel() method to get the index of the currently selected item. Then call the edit control's SetWindowText() method, or its StreamIn() method, to display the text (after opening the file and reading its contents, of course).

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"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

[Suresh H]

Hi Prasad, Thank you very much list box double click event is work.:)

[prasad_som]

Welcome ! :)

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[Suresh H]

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. 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(); i have tryed this code in mfc this is working properly but this code does not work in win 32 api, CStdioFile file(str, CFile::modeRead); DWORD dwSize = file.GetLength(); char *pBuffer = new char[dwSize + 1]; UINT uRead = file.Read(pBuffer, dwSize); pBuffer[uRead] = '\0'; file.Close(); ::SendMessage(hwndRichEdit,WM_SETTEXT, 0,(WPARAM)pBuffer); delete [] pBuffer;

[prasad_som]

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'};

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[Suresh H]

Hi Prasad, I just did that changes but no output. I traced the statements, it open the file and it reads till end of the file, Since its in the loop the cont value keeps on changing ….and also nothing is added to the rich edit box. Is there any way where I can open the file read the complete contents of the file and store it in one variable and pass that variable to get displayed in the rich edit ??? Files which I am trying to open are simple text files which contains lots of blank lines in the starting and end of the file .

[prasad_som]

I dont see any problem there, as long as array has some value.

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[Suresh H]

Prasad I think since we are using WM_SETTEXT its replacing the rich edit contents ?? can we use some message where it adds to rich edit box with out replacing the old contents ??

[prasad_som]

There is message EM_SETTEXTEX. But instead, read whole file content in to string, and use WM_SETTEXT.

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[Suresh H]

Hi prasad, How to read the whole file content in to string at a time ::???