|
Hello,
I'am doing a mfc dialog based program. In this one, I have a settings dialog box that should allow the user to select somethings through check boxes. The problem is that I've a lot of checkbox in this dialog (18 check box even more later!).
I wanted to do array of controls in my settings dialog box (just like in VB). In order to do that I've short-circuited Class wizard to create an array of CButton member variables but I still have to enumerate each variable for each ID of each control with the DDX_Control(...) macro.
There is also another problem.
If the member variable is defined like this:
CButton m_variable1;
I can use the following statement:
m_variable1.SetCheck();
But if I use the following declaration:
CButton m_variable[18];
m_variable[0].SetCheck();
I'have a assertion failed.
Can somebody give me a smart way to do such array of control?
Thanks a lot.
T. Varidel
|
|
|
|
|
The smart alternative: A list box of checkboxes, via the CCheckListBox class.
Regards,
Alvaro
Well done is better than well said. -- Benjamin Franklin
(I actually prefer medium-well.)
|
|
|
|
|
You can do something like this:
CButton* pButton[] =
{
&m_chk1,
&m_chk2,
&m_chk3,
&m_chk4,
};
pButton[n]->DoSomething();
or
UINT array[] =
{
IDC_CONTROL1,
IDC_CONTROL2,
IDC_CONTROL3,
IDC_CONTROL4,
};
GetDlgItem(array[n)->DoSomething();
or use collection classes or STL;
header file:
vector<cwnd*> m_wnds;
then add your controls
int OInitDialog:
m_wnds.push_back(&m_chk1);
m_wnds.push_back(&m_chk2;
m_wnds.push_back(&m_chk3);
m_wnds.push_back(&m_chk4);
m_wnds.at(i)->DoSomething();
|
|
|
|
|
Redesign your app. 18 checkboxes in one dialog is just too much.
And use a listview, a tree with checkboxes, whatever.
I don't think this is a serious possesion, and the evil most likely comes from your hand. Colin J Davies, The Lounge
|
|
|
|
|
I've created a dialog application in MSVC++ on an NT platform. Within the application I'm making periodic system calls to invoke the execution of a bat file. Every time the system call is made a MS Dos Command prompt window displaying cmd.exe in the title bar appears then disappears(quite annoying). Is there a way of disabling this behavior, or is there another call that can be made to invoke the bat file without the creation of the Dos window.
|
|
|
|
|
CreateProcess with CREATE_NO_WINDOW flag
|
|
|
|
|
One solution is SW_HIDE and CreateProcess().
STARTUPINFO si;
si.wShowWindow = SW_HIDE;
::CreateProcess(...);
Kuphryn
|
|
|
|
|
CreateProcess is the official way, but if you just need a quick alternative,
WinExec("whatever.exe", SW_HIDE);
Regards,
Alvaro
Well done is better than well said. -- Benjamin Franklin
(I actually prefer medium-well.)
|
|
|
|
|
i have made a little wrapper [in C#] for using windows hooks. When i came to test it, I found that it works on local hooks, butnot system wide hooks. i set the threadID to 0 as msdn instructs, but it doesnt work, so I was wondering if there are any special permissions needed to do such a thing. [i am using Windows Xp Pro]
1001111111011101111100111100101011110011110100101110010011010010
Sonork | 100.21142 | TheEclypse
|
|
|
|
|
|
Nishant S wrote:
Global hooks need to be in a DLL.
Well thats a bit stupid if you ask me. is that the SetWindowsHookEx call - or the callback in the dll?
1001111111011101111100111100101011110011110100101110010011010010
Sonork | 100.21142 | TheEclypse
|
|
|
|
|
|
Hy everyone!
I have a problem here...
my CRichEditCtrl, when it haves more than ~250 characteres, it crashes, and loses my CHARFORMAT atributes.
Or, if I try to make CString::GetLength() with the String that is associate with the control, it crashes too...
does anyone have some idea?
thanks!
Ricky
|
|
|
|
|
I need to know how I can detect whether the user currently has an active internet connection. Can anyone help? I've tried InetIsOffline(), but that only determines if the user is in online or offline mode, not if the actual connection is currently active.
|
|
|
|
|
One solution is to simply connect to a server.
Kuphryn
|
|
|
|
|
bool IsConnectedToInternet(void)
{
DEBUGF("IsConnectedToInternet");
WORD wVersionRequested = MAKEWORD(1, 1);
WSADATA wsaData;
TCHAR hostaname[1000];
int hostname_size = sizeof(hostaname);
bool connected = false;
if (WSAStartup(wVersionRequested, &wsaData) != 0)
{
DEBUGF("WSAStartup Failed (%i.%i) %s",
wsaData.wHighVersion, wsaData.wVersion, wsaData.szDescription);
return connected;
}
if (gethostname(hostaname, hostname_size) != SOCKET_ERROR)
{
struct hostent FAR *h = gethostbyname(hostaname);
if (h != NULL)
{
DEBUGF("gethostname %s %s", h->h_name, h->h_addr_list[0]);
if (strncmp(h->h_addr_list[0], "\x7f\x0\x0\0x1", 4)!=0)
{
connected = true;
}
}
}
else
{
DEBUGF("gethostname Failed");
}
WSACleanup();
return connected;
}
Todd Smith
|
|
|
|
|
Is it possible to add a scroll bar to a CStatic control?
I've derived a new base class from CStatic for graph/chart purposes, and I'd like to be able to allow the graph to scroll if it is too big for the available viewing area. I've found many graphing projects on the net, but none seem to have this feature which is of particular importance to me since I have long series of data.
I've tried adding the WS_HSCROLL and WS_VSCROLL styles, I've called EnableScrollBarCtrl(), and I've called ShowScrollBar() but none of these methods have any effect. Anyone know something I don't?
A second question: I've also added the SS_NOTIFY style, but my (base) class isn't receiving the notification. Do I have to override the message notification in every other class I derive from the base class to process the notification?
Thanks for the help,
--Dean
|
|
|
|
|
FWIW, I would have derived the control from CWnd, not CStatic. CStatic has too many restrictions such as the ones you described.
CPUA 0x5041
Sonork 100.11743 Chicken Little
"So it can now be written in stone as a testament to humanities achievments "PJ did Pi at CP"." Colin Davies
Within you lies the power for good - Use it!
|
|
|
|
|
Hello,
I have a listview that has LVS_ICON | LVS_ALIGNTOP | LVS_AUTOARRANGE style. I use ListView_InsertMarkHitTest do the hittest and ListView_SetInsertMark for the insert mark during drag-n-drop (DragOver). However, the insertion mark never display.
Do you have any idea?
Thanks,
Hiusing
|
|
|
|
|
Hi, all:
I am using VC6.0. I have a SDI application with Help system. All the toolbar buttons, menu items can get the context help, supported by the framework. I have three buttons on my CFormView window, I'd like to get context help on those three buttons when I use Context Help ( Arrow+question mark). What should I do to enable help on those three buttons?
I noticed that I have file called Resource.hm and it contains HIDC_MYBUTTON1,2,3. It is included in MyApplication.rc file. But I don't know how to get the context help on those.
Any help is highly appreciated.
Dion
Dion
|
|
|
|
|
http://www.codeproject.com/dialog/dlgboxtricks.asp[^]
A little over half way down the page. The method described works with dialogs, and should also work with form views.
CPUA 0x5041
Sonork 100.11743 Chicken Little
"So it can now be written in stone as a testament to humanities achievments "PJ did Pi at CP"." Colin Davies
Within you lies the power for good - Use it!
|
|
|
|
|
I have a class that is a data consumer with an identification number, when an object is instantiated a temporary ID is assigned to the object until it can dynamically aquire it's "real" number.
I have a CListCtrl that displays a list of these objects with their IDs as the label. As an object is created it needs to be displayed in this control so obviously the temporary ID is used until the real one comes along. The control is updated every second and when the new ID gets updated in the obj I need to be able to update the control to reflect this change without adding an additional line and leaving the old one hanging around. What I've done is, because the ojects are stored in a CMap, I store the key for each object in the ItemData of the list item. But when I go to pull the item data out, I don't always get the data I put in there. My code is below:
POSITION Pos = m_IndexToObjectMap.GetStartPosition();
long key = 0;
CString name = _T(" ");
CString id = _T(" ");
CDataClass Obj;
while(Pos != NULL){
bool bItemInList = false;
m_IndexToObjectMap.GetNextAssoc(Pos, key, Obj);
if(GetId(key) < 1)
continue;
id.Format("%.0f", GetId(key));
name = GetName(key);
for(int i = 0; i < m_List.GetItemCount(); i++){
if(key == (long)m_List.GetItemData(i)){
m_List.SetItemText(i, 0, id);
m_List.SetItemText(i, 1, name);
bItemInList = true;
break;
}
}
if(!bItemInList){
m_List.InsertItem(0, id);
m_List.SetItemText(0, 1, name);
m_List.SetItemData(0, (DWORD) key);
}
}
Any assistance is greatly appreciated,
John
|
|
|
|
|
Hi, i want to display a .jpg file in my SDI application. can anybody tell me how to do that? Just i could display .bmp files. Thank you in advance
|
|
|
|
|
Have a look at paintlib...It was very helpful when I was developing a PICT file decoder
http://www.paintlib.de/paintlib/
Gary Kirkham
A working Program is one that has only unobserved bugs
I thought I wanted a career, turns out I just wanted paychecks
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
