I have a richedit control on a dialog. I want to populate the richedit control with a string. The richedit control itself displays properly. But I don't know how to populate the richedit control with a string. I took a guess at it below, in the resource.rc code.
In main.cpp, I have:
case IDC_BUT_ABOUT:
{
HINSTANCE hRichEdit;
hRichEdit = LoadLibrary("RICHED32.DLL");
DialogBox( hInst, MAKEINTRESOURCE(IDD_ABOUT), hDlgWnd,(DLGPROC)InitAbout );
//ShowWindow(hDlgWnd, SW_SHOWNORMAL);
return TRUE;
}
break;
In resource.rc, I have:
IDD_ABOUT DIALOGEX 0, 0, 206, 136
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "About"
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
PUSHBUTTON "Close",IDCANCEL,77,115,50,14
CONTROL "",IDC_RICHEDIT21,"RichEdit20W",ES_AUTOHSCROLL | ES_READONLY | WS_BORDER | WS_TABSTOP,36,53,130,46
END
string rt = "{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fcharset0 Arial;}{\f1\fnil\fprq2\fcharset0 Biondi;}}{\colortbl ;\red255\green0\blue0;}\viewkind4\uc1\pard\f0\fs20\par\cf1\f1 hello\cf0\f0 \ul some text here\par}";
this.IDC_RICHEDIT21.Rtf = rt;
But this apparently isn't even close to how I should put text from a string into a rich edit control?
Try EM_SETTEXTEX or EM_STREAMIN.
Related
I am making a win32 api window application project on visual studio 2012.I use a LPWSTR type variable to store my strings described as follow.
LPWSTR MyStringList[3]={L"apple",L"orange",L"watermelon"};
I expect to copy the text from an editbox to one of the strings in MyStringList. Therefore,I made a simple editbox and button.
Here is the definition of editbox and button.
case WM_CREATE:
hEdit = CreateWindow(L"EDIT",
L"",
WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL,
10, 10, 200, 25,
hWnd,
(HMENU)ID_EDIT,
GetModuleHandle(NULL),
NULL);
hBtn = CreateWindow(L"BUTTON",
L"",
WS_CHILD | WS_VISIBLE,
250, 10, 50, 30,
hWnd,
(HMENU)ID_BUTTON,
GetModuleHandle(NULL),
NULL);
Here is the action when the button is pushed.The two messagebox are used to see if the string has been changed after function GetWindowText is called.
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
switch (wmId)
{
case ID_BUTTON:
MessageBox(hWnd,MystringList[1],L"Before_Pusing",MB_OK);
GetWindowText(hEdit,MystringList[1],sizeof(MystringList[1]));
MessageBox(hWnd,MystringList[1],L"After_Pushing",MB_OK);
InvalidateRect(hWnd,NULL,TRUE);
break;
Now I tried to push the button after typing "banana" into the editbox. The second string "orange" should be replaced with "banana". However,it turned out that nothing changed .The second messagebox displayed "orange" as the first messagebox did. What's wrong with my code? Please help! Thanks a lot!
You could try this, adding whatever programming quirks that Windows needs.
#define MYLEN 20
...
char MyStringList[3][MYLEN+1] = {"apple", "orange", "watermelon"};
Then you can fetch the string from the edit box with
GetWindowText(hEdit,MystringList[1],MYLEN);
Although the GetWindowText() documentation says
"Copies the text of the specified window's title bar (if it has one) into a buffer. If the specified window is a control, the text of the control is copied. However, GetWindowText cannot retrieve the text of a control in another application."
I have the problem with my dialog, that when i invoke the function "DialogBoxA" the Dialog doesn't appear. I only get the "Busy Cursor" and the the cursor is also trapped inside of a small rectangle (the size of the dialog). After the press of (almost) any button it magically appears.
Dialog box call
DialogBoxA(hInstance,MAKEINTRESOURCEA(IDD_ORACLE_DIALOG),0,reinterpret_cast<DLGPROC>(DlgProc));
Dialog resource code
IDD_ORACLE_DIALOG DIALOGEX 0, 0, 155, 71
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
CAPTION "Dialog"
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
DEFPUSHBUTTON "OK",IDOK,43,50,50,14
PUSHBUTTON "Cancel",IDCANCEL,98,50,50,14
COMBOBOX IDC_COMBOSERVER,53,6,94,30,CBS_DROPDOWN | CBS_SORT | CBS_NOINTEGRALHEIGHT | WS_VSCROLL | WS_TABSTOP
EDITTEXT IDC_EDITLOG,54,25,94,14,ES_AUTOHSCROLL
LTEXT "Server",IDC_STATIC,7,7,47,13
LTEXT "Log",IDC_STATIC,7,25,47,13
END
DialogProc
LRESULT CALLBACK DlgProc(HWND hWndDlg, UINT Msg, WPARAM wParam,LPARAM lParam){
switch(Msg){
case WM_INITDIALOG:
for(auto it = vServerList.begin();it!=vServerList.end();++it){
SendMessageA(GetDlgItem(hWndDlg,IDC_COMBOSERVER),CB_ADDSTRING,0,reinterpret_cast<LPARAM>(it->c_str()));
}
if(vServerList.size()>0){
SendMessage(GetDlgItem(hWndDlg,IDC_COMBOSERVER),CB_SETCURSEL,0,0);
SendMessage(GetDlgItem(hWndDlg,IDC_EDITLOG),WM_NCLBUTTONDOWN,HTCAPTION,0);
}else{
SendMessage(GetDlgItem(hWndDlg,IDC_COMBOSERVER),WM_NCLBUTTONDOWN,HTCAPTION,0);
}
#ifdef _DEBUG
SendMessageA(GetDlgItem(hWndDlg,IDC_EDITLOG),WM_SETTEXT,0,reinterpret_cast<LPARAM>("q40log"));
#endif
return TRUE;
case WM_COMMAND:
switch(wParam){
case IDOK:
size_t tServer,tLog;
tServer = GetWindowTextLength(GetDlgItem(hWndDlg,IDC_COMBOSERVER))+1;
tLog = GetWindowTextLength(GetDlgItem(hWndDlg,IDC_EDITLOG))+1;
char *pszServer,*pszLog;
pszServer = static_cast<char*>(calloc(tServer,sizeof(char)));
pszLog = static_cast<char*>(calloc(tLog,sizeof(char)));
GetDlgItemTextA(hWndDlg,IDC_COMBOSERVER,pszServer,tServer);
GetDlgItemTextA(hWndDlg,IDC_EDITLOG,pszLog,tLog);
szServer = pszServer;
szUser = pszLog;
free(pszServer);
free(pszLog);
EndDialog(hWndDlg,0);
return TRUE;
case IDCLOSE:
case IDCANCEL:
EndDialog(hWndDlg,0);
return FALSE;
}
break;
}
return FALSE;
}
The obvious failure modes are:
The dialog procedure is faulty.
The dialog resource is invalid.
The dialog resource is linked incorrectly and so cannot be loaded.
The instance handle is incorrect.
Of these options, the cast that you used in the dialog procedure parameter, it seems very likely that the dialog procedure is faulty.
I expect that you added the cast because the code would not compile. And it would not compile because the dialog procedure has an incorrect signature. The cast does not change that fact. It is just a way for you to suppress the compiler and tell it that you know better than it does. Generally speaking, the compiler tends to be right. If your dialog procedure has the wrong signature you need to correct it. Refer to the documentation to find out the correct signature.
The other big problem with your code is that you ignore the return value of DialogBox. If the function fails then the documentation tells you that a value of 0 or -1. In that scenario you can call GetLastError to get extended error information. You must get into the habit of checking for errors when using Win32 API functions.
As the title says, I can't get it working. The button works and looks like normal...
HWND hWndButtonGetRes = CreateWindowEx(NULL,
"BUTTON",
"Get Results",
WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON,
50,
220,
100,
24,
hwnd,
(HMENU)IDC_MAIN_BUTTON,
GetModuleHandle(NULL),
NULL);
SendMessage(hWndButtonGetRes, BM_SETIMAGE, (WPARAM)IMAGE_BITMAP, (LPARAM)myBitmap);
Edit:
The bitmap is being loaded this way:
myBitmap = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(BM))
where BM is
BM BITMAP DISCARDABLE "bitmap.bmp"
#define BM 1
I am running Windows 7 64.
I have Created an Edit window.
I want one string to be displayed in one line and the other string to be displayed on the other line, but the code I am executing only displays the second string. below is my code snippet:
hWndEdit = CreateWindow("EDIT", // We are creating an Edit control
NULL, // Leave the control empty
WS_CHILD | WS_VISIBLE | WS_HSCROLL |
WS_VSCROLL | ES_LEFT | ES_MULTILINE |
ES_AUTOHSCROLL | ES_AUTOVSCROLL,
10, 10,1000, 1000,
hWnd,
0,
hInst,NULL);
SetWindowText(hWndEdit, TEXT("\r\nFirst string\r\n"));
SetWindowText(hWndEdit, TEXT("\r\nSecond string"));
OUTPUT:
You are only seeing the last line because SetWindowText() replaces the entire contents of the window in one go.
If you want to display both lines at one time, simply concatenate them together in a single call to SetWindowText():
SetWindowText(hWndEdit, TEXT("\r\nFirst string\r\n\r\nSecond string"));
On the other hand, if you want to insert them at different times, you have to use the EM_SETSEL message to place the edit caret at the end of the window and then use the EM_REPLACESEL message to insert text at the current caret position, as described in this article:
How To Programatically Append Text to an Edit Control
For example:
void AppendText(HWND hEditWnd, LPCTSTR Text)
{
int idx = GetWindowTextLength(hEditWnd);
SendMessage(hEditWnd, EM_SETSEL, (WPARAM)idx, (LPARAM)idx);
SendMessage(hEditWnd, EM_REPLACESEL, 0, (LPARAM)Text);
}
.
AppendText(hWndEdit, TEXT("\r\nFirst string\r\n"));
AppendText(hWndEdit, TEXT("\r\nSecond string"));
hWndEdit = CreateWindow("EDIT", // We are creating an Edit control
NULL, // Leave the control empty
WS_CHILD | WS_VISIBLE | WS_HSCROLL |
WS_VSCROLL | ES_LEFT | ES_MULTILINE |
ES_AUTOHSCROLL | ES_AUTOVSCROLL,
10, 10,1000, 1000,
hWnd,
0,
hInst,NULL);
SetWindowText(hWndEdit, TEXT("\r\nFirst string\r\n\r\nSecond string"));
or
SetWindowText(hWndEdit, TEXT("\r\nFirst string\r\n"));
char* buf = malloc(100);
memset(buf, '\0', 100);
GetWindowText(hWndEdit, (LPTSTR)buf, 100);
strcat(buf, "\r\nSecond string");
SetWindowText(hWndEdit, (LPTSTR)buf);
Any ideas how to use SetParent()?
The following doesn't seem to work:
fhWnd = FindWindow(_T("Notepad"), NULL);
hWnd = CreateWindowEx(WS_EX_TOPMOST , _T("test"), _T("test"),
WS_POPUP,
20, 20, 400, 400, NULL, NULL, hInst, NULL);
SetParent(hWnd, fhWnd);
DWORD style = GetWindowLong(hWnd, GWL_STYLE);
style = style & ~(WS_POPUP);
style = style | WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
SetWindowLong(hWnd, GWL_STYLE, style);
SetWindowLong(fhWnd, GWL_STYLE, GetWindowLong(fhWnd, GWL_STYLE) | WS_CLIPCHILDREN);
With the above code I have to move the parent window out of the screen and back in again in order to see what's draw on the child window.
Any idea what I am doing wrong?