I am creating a rich edit text box like so:
const char *testText = "Hello \\bworld!";
LoadLibrary("riched20.dll");
hwndoutbox = CreateWindowEx(
ES_SUNKEN,
RICHEDIT_CLASS,
testText,
WS_BORDER | WS_VISIBLE | WS_CHILD,
0, 40, 300, 300,
hwnd, 0, hInstance, NULL);
The intended result is to display 'Hello World' with the 'World' in bold.
What am I doing wrong?
I have a hunch that \b might be an escape code for something, but i cant find much info to back that up
You need to go and have a look at the specification for RTF. For a start, RTF data has a header, and you aren't including that.
In fact, Wikipedia's page on RTF (here) might have been a good place for you to start. It includes this example text:
{\rtf1\ansi{\fonttbl\f0\fswiss Helvetica;}\f0\pard
This is some {\b bold} text.\par
}
... which is a string with a bold word.
The "rich edit control" is a control designed to render RTF.
Related
I'm dynamically (in runtime) creating a CRichEditCtrl control and when I set the text to it, the font is different from the other controls (e.g. CStatic - see the pictures) in the dialog (I didn't use any formatting for the rich edit control). The difference is best seen with the characters from alphabets like Chinese or Japanese. I tried using SetDefaultCharFormat method but it was not having the effect I wanted. Then I found out, that I first need to set the text to the rich edit control, and only then use the formatting function.
// 1. dynamically created rich edit ctrl
CRichEditCtrl* dynamic_rich = new CRichEditCtrl();
dynamic_rich->Create(WS_CHILD | WS_TABSTOP | ES_LEFT | ES_MULTILINE | WS_VSCROLL |
WS_HSCROLL | ES_WANTRETURN | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL | ES_AUTOVSCROLL,
CRect(10, 0, 184, 23), this, 1234);
dynamic_rich->ModifyStyleEx(WS_EX_CLIENTEDGE, 0, SWP_DRAWFRAME);
dynamic_rich->SetWindowTextW(L"アラビア語"); // calling it here results in the 3rd picture
// which is the closest to the desired result, though it's still not the same as in CStatic
CHARFORMAT cf = { 0 };
dynamic_rich->GetDefaultCharFormat(cf);
_tcscpy_s(cf.szFaceName, L"MS Shell Dlg 2");
cf.dwMask = CFM_FACE;
dynamic_rich->SetDefaultCharFormat(cf);
// 2. statically created rich edit ctrl - defined in .rc file
CRichEditCtrl* static_rich = (CRichEditCtrl*)this->GetDlgItem(IDC_RICHEDIT);
static_rich->SetWindowTextW(L"アラビア語");
// 3. statically created cstatic - for the font comparison
CStatic* label = (CStatic*)this->GetDlgItem(IDC_STATIC);
label->SetWindowTextW(L"アラビア語");
When I leave the default font (without calling SetDefaultCharFormat) - seems blurry
When I call SetDefaultCharFormat, then set the text - the same result
When I set the text, then call SetDefaultCharFormat - not quite the same, but close
The font in the rich edit control still doesn't look the same as in CStatic (seems a bit different and also bigger), but that I can live with. Calling SetDefaultCharFormat every time I change a text is a problem though because I need to be constantly changing the text in the runtime and it could potentially cause an overhead. Does anybody have a better solution? Thanks.
I'm creating a basic application in C++ (Win32 API). I tried to make a button with the CreateWindow() function as seen below:
button1 = CreateWindow("button", TEXT("Click Me!"), WS_TABSTOP | WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 100, 200, 70, 25, hwnd, (HMENU)NULL, NULL, NULL);
The problem is that there is a white border around the button as you can see here:
Link
I tried to make it transparent with this code but is doesn't work.
case WM_CTLCOLORBTN:{
HBRUSH hBrushbtn;
hBrushbtn = (HBRUSH)GetStockObject(NULL_BRUSH);
SetBkMode((HDC) wParam, TRANSPARENT);
return ((LRESULT)hBrushbtn);
break;
}
How can I do this?
Thanks
SetBkMode() affects whether or not text rendering is transparent or not, which is not the issue here.
You're going to have to WM_PRINTCLIENT up to the parent control into the button's DC, as I demonstrate here. (Note that my code still calls SetBkMode() for transparent text in checkboxes, groupboxes, labels, etc.; for pushbuttons it won't matter if you're using visual styles).
I used the following code and it worked fine, allowed the user to only enter in numbers. I wanted to increase the functionality by using RichEdit so I added that.
I went from using:
wchar_t sampletext[] = L"foobar";
HWND inputText = CreateWindowEx(WS_EX_CLIENTEDGE, L"EDIT", sampletext,
ES_NUMBER | WS_CHILD | WS_VISIBLE | WS_TABSTOP | ES_MULTILINE,
10, 10, 500, 75, hWnd, NULL, *hInst, NULL);
to:
LoadLibrary(L"riched32.dll");
wchar_t sampletext[] = L"foobar";
HWND inputText = CreateWindowEx(WS_EX_CLIENTEDGE, L"RichEdit", sampletext,
ES_NUMBER | WS_CHILD | WS_VISIBLE | WS_TABSTOP | ES_MULTILINE,
10, 10, 500, 75, hWnd, NULL, *hInst, NULL);
Changing it allowed me to use CTRL+Z and CTRL+A and all but now for some reason I could enter characters that weren't numbers.
How do I fix this so Rich Edit only accepts number in this text field?
or
Alternatively, how would I create my own custom filter that would only accept numbers into the text field?
EDIT:
Here's an image of me typing
The "RichEdit" control class has its own set of styles.
But ES_NUMBER is one of them, according to MSDN. However, note the comment by ElmueSoft.
To filter input to only digits without help from the control, you can subclass it. You'd need to handle quite a few messages though. WM_CHAR is the most obvious, but WM_PASTE and WM_SETTEXT can have non-numeric text passed in.
Good information on subclassing:
http://blogs.msdn.com/b/oldnewthing/archive/2009/05/07/9592397.aspx
http://blogs.msdn.com/b/oldnewthing/archive/2003/11/11/55653.aspx
Below is part of a working normal win32 application created from scratch, not dialog based. it will show the text on the buttom, not top:
hButtonApply = CreateWindow(
"BUTTON",
"Reset",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | BS_BOTTOM,
95, 130, 120, 40,
hWnd, (HMENU)IDC_BUTTON_RESET, hInstance, NULL);
SendMessage(hButtonApply, BM_SETSTYLE, BS_TOP, TRUE);
this however makes it a radio button:
SendMessage(hButtonApply, BM_SETSTYLE, BS_RADIOBUTTON, TRUE);
same for a resource-defined dialog button control.
Subclassing is acceptable. Owner-Drawn Buttons are not acceptable. Thanks, Haotian Yang
Some window styles can only be set during CreateWindow, I guess this might be one of them.
Did you try SetWindowLong ?
Edit:
This seems to work:
LONG style = GetWindowLong(hBtn,GWL_STYLE);
style = (style & ~BS_BOTTOM) | BS_TOP;
SetWindowLong(hBtn,GWL_STYLE,style);
I know how to draw a button in C++ but how would i make an icon on it can someone post source or give reference please? by SendMessage() or if not that way just please paste
Please need easier anwsers without so many files im new a bit
Since you're new, you may also wish to consult the MSDN Library. You can find information on Button Styles (see, specifically, the BS ICON and BS BITMAP styles) and the BM_SETIMAGE message .
If you use MFC then I would recommend you to use the following CButton method SetIcon:
CButton myButton;
// Create an icon button.
myButton.Create(_T("My button"), WS_CHILD|WS_VISIBLE|BS_ICON,
CRect(10,10,60,50), pParentWnd, 1);
// Set the icon of the button to be the system question mark icon.
myButton.SetIcon( ::LoadIcon(NULL, IDI_QUESTION) );
This works very well.
send BM_SETIMAGE message, and pass loaded image handle to lParam.
button1 = CreateWindowW(L"BUTTON", L"&Button", WS_VISIBLE | WS_CHILD | WS_TABSTOP | BS_BITMAP, 20, 50, 80, 25, hwnd, (HMENU) 600, NULL, NULL);
hImg = LoadImageW(NULL, L"test123.bmp", IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR | LR_DEFAULTSIZE | LR_LOADFROMFILE);
SendMessageW(button1, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hImg);
P.S: you need to use BS_BITMAP flag when CreateWindow()