I am working on one project in win32 API. Here, I want the user to type a text in a search bar and the first corresponding words should pop-up. When the user is done with the typing or selects the word, clicking on the 'Process' button should display another message box. I want the search bar should look as this:
I want each word to display a different message box when the user clicks on the 'Process' button. Implying that, the application must be able to store data such that it can be retrieved. So far, I have this code which can store data and be retrieved.
HWND hWndComboBox = CreateWindow (TEXT("COMBOBOX"), TEXT (""),
CBS_DROPDOWN| CBS_HASSTRINGS | WS_VSCROLL| WS_VISIBLE |WS_CHILD ,
100, 20, 200, 70,
hwnd ,(HMENU) NULL, NULL, NULL);
CreateWindow (TEXT("BUTTON"), TEXT ("Process "),
WS_VISIBLE | WS_CHILD ,
200, 100, 70, 20,
hwnd,(HMENU) NULL, NULL, NULL);
SendMessage (
hWndComboBox ,
(UINT) CB_ADDSTRING,
(WPARAM) 0, (LPARAM) TEXT ("Apple"));
SendMessage (
hWndComboBox ,
(UINT) CB_ADDSTRING,
(WPARAM) 0, (LPARAM) TEXT ("Apple juice"));
SendMessage (hWndComboBox , CB_GETCURSEL , (WPARAM) 0, (LPARAM) 0);
Here, what I cannot do is that there is no default word like "Search Fruits" which clears when the user begins to type. Moreover, when the user selects 'Apple' and clicks on the 'Process' button, no dialog box is displayed. I do not know how to call the message box to respond depending on the user inputs. And also, the small search icon on the right of the search box.
Please what should I do? I am using win32 API Code:Blocks. Any further question for clarification is welcome. Any link or answer is most welcome. Thank you all.
Related
So , I have a textbox(in win32) that I made.
TextBox = CreateWindowEx(WS_EX_CLIENTEDGE,"EDIT", "Hello you name is: ",
WS_BORDER | WS_CHILD | WS_VISIBLE ,
140,50,500, 250,
hwnd, NULL, NULL , NULL);
My question is: How can I get to add multiple text in the "textbox"
My program is mostly made out of questions that i ask and the user responds to it.
Question two: How can I make this "dialog" between the user and the computer.
Last, but not least, I've made these buttons:
Submit = CreateWindow("BUTTON", "Submit", WS_VISIBLE | WS_CHILD | WS_BORDER,
450,320,80,20,
hwnd, (HMENU) 1, NULL, NULL);
SubmitQuestion = CreateWindow("BUTTON", "Inregistreaza raspuns", WS_VISIBLE | WS_CHILD | WS_BORDER,
310,350,150,26,
hwnd, (HMENU) 2, NULL, NULL);
Next = CreateWindow("BUTTON", "Next", WS_VISIBLE | WS_CHILD | WS_BORDER,
250,320, 80, 20,
hwnd, (HMENU) 2, NULL , NULL);
Submit works, but when I press next nothing happens. How can the user by clicking "NEXT" can go to the next question and also when he presses submit his answer to be registered?
And also , how by SendMessage , classes are included (calling functions ) ---> I have a method of "questions" (8) and i don't know how to call it in order to work with the textbox and win32 syntax.
Your editbox needs to have a unique ID (passed in the hMenu parameter). If you intend for the editbox to display more than one line of text it also needs to have ES_MULTILINE style.
Each of your buttons also needs to have a unique ID.
Your other questions are not clear.
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.
I was wondering if there is a way to add (programatically, of course) an icon/button/whatever besides plain text to a window (Microsoft Windows window...)'s title bar or next to where the minimize/maximize/close buttons are. I could draw it myself and create an illusion it is a part of the window, but I wonder if in the user32 api there is such a method.
So far, I found a way to disable the minimize/maximize/close buttons but not a way to add a custom one to them. It seems strange to me.
Here is what I am trying to achieve:
I have been wondering how it is done here, since drawing a button for every window using gdi/gdi+ and then detecting if it is overlapped by another window and then displaying only the non-overlapped part seems to me like an unlikely solution. Probably the button has been registered in the window class so that every window has this button. Any pointers what to do?
In addition, how do I create a button at all, assuming I DON'T have Unicode enabled. Then in the following piece of code:
HWND hwndCommandLink = CreateWindow(
L"BUTTON", // Class; Unicode assumed.
L"", // Text will be defined later.
WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_COMMANDLINK, // Styles.
10, // x position.
10, // y position.
100, // Button width.
100, // Button height.
hDlg, // Parent window.
NULL, // No menu.
(HINSTANCE)GetWindowLong(hDlg, GWL_HINSTANCE),
NULL); // Pointer not needed.
SendMessage(clHwnd, WM_SETTEXT, 0, (LPARAM)L"Command link");
SendMessage(clHwnd, BCM_SETNOTE, 0, (LPARAM)L"with note");
I have to substitute all the nice Windows constants with their long equivalent....However, when I search for them, all i get is this:
http://msdn.microsoft.com/en-us/library/bb775951(v=VS.85).aspx
Any pointers?