In WM_CREATE message of my main window procedure I create a listview with the next code:
hMyList = CreateWindowA( WC_LISTVIEW,TEXT(""), WS_CHILD | WS_VISIBLE |
LVS_LIST | LVS_TYPEMASK , XPOS(450), YPOS(20), NWIDTH(200),
NHEIGHT(200),hWnd,(HMENU) 9876, hInst, NULL);
Then I insert code to add a column to that listview:
LVCOLUMN column;
column.mask = LVCF_TEXT;
column.pszText = "Name";
SendMessage(hMyList, LVM_INSERTCOLUMN, NULL, (LPARAM)&column );
//returns 0; so everything is fine
But column doesn't appear in the listview.
What can be the source of the problem?
Columns are visible only in report/details view of the listview. To switch it in that mode you should post LVM_SETVIEW message to it, or use LVS_REPORT style instead of LVS_LIST in the CreateWindowA.
Related
To avoid a duplicate control to CreateWindowEx(0,MONTHCAL_CLASS,...), it is expected to have DateTimePick_Class control showing DropDown Calendar defaultly.
HWND hwndDP = CreateWindowEx(
0,
DATETIMEPICK_CLASS,
TEXT("DateTime"),
WS_BORDER | WS_CHILD | WS_VISIBLE | DTS_SHOWNONE,
50, 20,200,25,
hWnd,
(HMENU)ID_DATETIME_PICKer,
hInst,
NULL);
But it seems that one has to know the control of dropdown arrow button say "ARROW_BTN", like this
SendMessage(hwndDP,WM_NOTIFY,(int)ARROW_BTN,(NMHDR)DTN_DROPDOWN);
or
SendMessage(hwndDP,DTN_DROPDOWN,0,0);
what is the command to retrieve the control ID or some other tricks behind?
I'm using TrackPopupMenuEx inside a UI CWinThread,
CMonitor is derived from CWinThread
monitor_ = (CMonitor *)AfxBeginThread(RUNTIME_CLASS(CMonitor));
CMonitor::InitInstance containes
m_pMainWnd = new CWnd();
m_pMainWnd->CreateEx(WS_EX_TOOLWINDOW | WS_EX_CONTROLPARENT | WS_EX_WINDOWEDGE | WS_EX_TOPMOST, AfxRegisterWndClass(CS_DBLCLKS),
NULL, WS_POPUP | WS_CLIPSIBLINGS | WS_VISIBLE, 50, 50, 50, 50, NULL, NULL);
Then later I do
SetForegroundWindow(AfxGetMainWnd()->m_hWnd);
auto popup_menu_flags = TPM_RETURNCMD | TPM_BOTTOMALIGN | TPM_RIGHTBUTTON | TPM_VERTICAL;
auto menu_item = TrackPopupMenuEx(menu, popup_menu_flags, point.x, point.y, AfxGetMainWnd()->m_hWnd, NULL);
DestroyMenu(menu);
The PopupMenu display correctly and I can use the mouse to select a menu item. However the arrow keys do not work.
I have used Spy++ and m_pMainWnd get messages for WM_KEYUP, VK_DOWN but nothing happens. WM_KEYDOWN is not seen.
What am I missing?
I'm creating my own program in WINAPI. I've got one problem.
I created a listbox with WS_VSCROLL style.
Everything is ok, but if I fill the listbox with strings the last strings are "invisible".
I must to scroll down list and then I can see the strings.
How do I automatically scroll down the listbox, using the mouse, to show the last string?
You know, I wrote chatBox. Every chatbox, which I know, has got this function:
hListaChatu = CreateWindowEx( WS_EX_DLGMODALFRAME, "LISTBOX", NULL,
WS_CHILD|WS_VISIBLE|WS_BORDER|WS_VSCROLL, rect_okna_glownego.right - 320,
rect_okna_glownego.top, 300, rect_edit_text.top - 25 , hwnd, NULL,
hInstance, NULL );
I have an EDIT control created like this:
hwndEDIT_5 = CreateWindowEx (
0, "EDIT", NULL,
WS_VSCROLL | WS_BORDER | WS_VISIBLE | WS_CHILD | ES_MULTILINE | ES_READONLY,
135, 450, 555, 200,
h2, ( HMENU ) ID_EDIT_CONSOLE,
h1, NULL
);
As you can see it is a read-only EDIT area where multi lines text can be displayed. It is supposed to be a console where I can display some information for users when they use the program. I would like the text area to automatically scroll to the bottom-most entry (the newest one) whenever a new line (or message for an user) is added. I've implemented this:
SetDlgItemText ( h2, ID_EDIT_CONSOLE, ch_s );
SCROLLINFO scr;
SCROLLINFO * scr_p = &scr;
scr.cbSize = sizeof ( SCROLLINFO );
scr.fMask = SIF_RANGE;
GetScrollInfo ( GetDlgItem ( h2, ID_EDIT_CONSOLE), SB_VERT, scr_p );
int mmax = scr.nMax;
scr.fMask = SIF_POS;
scr.nPos = mmax;
SetScrollInfo ( GetDlgItem ( h2, ID_EDIT_CONSOLE), SB_VERT, scr_p, TRUE );
That code is scrolling vertical scrollbar to the end of an EDIT control after adding new msg and it works great, the scrollbar gets scrolled but the text still remains visible from the beginning - it rewinds to the beginning after addition while scrollbar rewinds to the bottom. How to make it properly?
Last but not least - this is might be important - in order to display a message firstly I capture the text that is already displayed by using:
GetDlgItemText ( h2, ID_EDIT_CONSOLE, buf, len + 1 );
then I convert buf into string and add to that string a new message that I want to display. Then I convert it back to char array and set it up with SetDlgItemText. I seperate lines by using \r\n. I've coded it that way because I didn't know how to add a line to an EDIT control in different way than using SetDlgItemText. And it adds only one entry AFAIK - if used twice I will not come up with two entries added to an EDIT control, but the first one will get replaced by second function call.
Don't use SetScrollInfo. Use SendMessage() with the EM_LINESCROLL message, sending the message to the edit control's window handle.
SendMessage(MemoHwnd, EM_LINESCROLL, 0, NumLinesToScroll);
The documentation says:
The control does not scroll vertically past the last line of text in the edit control. If the current line plus the number of lines specified by the lParam parameter exceeds the total number of lines in the edit control, the value is adjusted so that the last line of the edit control is scrolled to the top of the edit-control window.
I had the same problem and solved it with Jerry Coffin's answer and some research.
This is the way I use now:
string text = "Append this text";
SendMessageA(hEdit, EM_SETSEL, 0, -1); //Select all
SendMessageA(hEdit, EM_SETSEL, -1, -1);//Unselect and stay at the end pos
SendMessageA(hEdit, EM_REPLACESEL, 0, (LPARAM)(text.c_str())); //append text to current pos and scroll down
If needed: To scroll at the end of Edit Control without appending text:
SendMessageA(hEdit, EM_SETSEL, 0, -1); //Select all.
SendMessageA(hEdit, EM_SETSEL, -1, -1);//Unselect and stay at the end pos
SendMessageA(hEdit, EM_SCROLLCARET, 0, 0); //Set scrollcaret to the current Pos
You can add text by setting the beginning and end of the selection to the end of the text in the control (EM_SETSEL), then replacing the (empty) selection with your new text (EM_REPLACESEL).
Scrolling to the bottom can be done with EM_SCROLLCARET after the caret (the selection) is at the end of the text. There are other ways, but if you're doing it immediately after adding text, this is probably the easiest.
in my case I had a multi line string and Ken White's idea worked very well:
HWND hEdit = this->GetDlgItem(IDC_EDIT_LOG)->m_hWnd;
if (hEdit)
{
int lineCount = m_strClientLog.Replace(_T("\n"), _T("\n"));
::SendMessage(hEdit, EM_LINESCROLL, 0, lineCount);
}
for MFC projects you can use:
mLoggingTextCtl.SendMessage(EM_SETSEL, 0, -1); //Select all.
mLoggingTextCtl.SendMessage(EM_SETSEL, -1, -1);//Unselect and stay at the end pos
mLoggingTextCtl.SendMessage(EM_SCROLLCARET, 0, 0); //Set scrollcaret to the current Pos
I am new in vc++ and i need a Password field in my application. I created edit textbox using below code but don't know how to create password field and button control.
CreateWindow(L"EDIT", L"hello", WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT |
ES_AUTOHSCROLL | ES_WANTRETURN, 350, 500, 130, 20, hwnd, NULL, NULL, NULL);
Any help would be grateful. thanks
Try ES_PASSWORD :
Displays an asterisk (*) for each
character typed into the edit control.
This style is valid only for
single-line edit controls.
Windows XP: If the edit control is
from user32.dll, the default password
character is an asterisk. However, if
the edit control is from comctl32.dll
version 6, the default character is a
black circle.
To change the characters that is
displayed, or set or clear this style,
use the EM_SETPASSWORDCHAR message.
Note Comctl32.dll version 6 is not
redistributable but it is included in
Windows XP or later. To use
Comctl32.dll version 6, specify it in
a manifest. For more information on
manifests, see Enabling Visual Styles.
Source : Edit Control Styles
Edit
You mean creating a button ? Via Using Buttons :
HWND hwndButton = CreateWindow(
L"BUTTON", // Predefined class; Unicode assumed.
L"OK", // Button text.
WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON,
0, // x position.
0, // y position.
50, // Button width.
50, // Button height.
hwnd_parentwindow,
NULL, // No menu.
(HINSTANCE)GetWindowLong(hwnd_parentwindow, GWL_HINSTANCE),
NULL);
You can select the edit box and right click and choose its properties. In that there is an option called password. Just check it.
Also this link will help you.
http://msdn.microsoft.com/en-us/library/d3223ht2.aspx
Or if you want you can directly add
ES_PASSWORD
also along with rest.