|
How do you set the dropped height of a CComboBox that is created dynamically? 
|
|
|
|
|
MoveWindow() is what you need. Move the window to the area the combo needs and the drop area. The combo will only use the top part when the drop area is not shown. When the drop area is shown, this will expand down to the window coordinates specified in the MoveWindow() call.
Roger Allen
Sonork 100.10016
Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003
|
|
|
|
|
Hi,
Because of dependencies to external software (and their SDKs) that uses MFC4.2 in old versions of their software and MFC7.0 in newer version I have to compile two versions of my software, one under MFC4.2 and one version under MFC7.0.
Is there any way that I can accomplish this without maintaining separate dsw and sln files?
Is there any way of setting up my project to use another compiler/linker?
Thankful for any help,
Johannes
|
|
|
|
|
HI,
I have a problem concerning MFC with visual C++ 6.0
I want to insert item in a Tree. This Item will be selected via a menu which will open a window for the item selection. that is for the context!
I have problem of classes and i don't understang very well which classes must I choose for my differents window. Could you help me ?
For the tree which is in a the main window i choose a form view
and for the others windows ( for item selections) i create my own class.
But it doesn't work.
Sorry for mistakes,
i am french 
|
|
|
|
|
Hi!
I have to write an application, which should communicate over a Bluetooth dongle for USB. Since I never wrote any drivers or such hardware based applications before, I have no idea how to handle this. The MSDN only offers information for Windows CE, but this application should run under Windows 2000.
Can anyone help me???
|
|
|
|
|
Before I rush off and port Chris Maunders extended tooltip article to WTL ( ), I wondered if there was an easier way to get multiline tooltips to display? It seems that Windows already has support for this (such as the tips displayed on quick-launch icons on the task bar) - can I not leverage this somehow?
When I am king, you will be first against the wall.
|
|
|
|
|
Groan. I solved this by using a combination of TTM_SETMAXTIPWIDTH and "\r\n" to force new lines. I expect "\r\n" to just work, but it seems you must send a TTM_SETMAXTIPWIDTH first.
When I am king, you will be first against the wall.
|
|
|
|
|
Hi, there.
I've got a problem with using property sheet.
Actually, I wanted to use Tab control, but it is really hard and complicated to add some controls on each tab.
so I decided to use property sheet.
I have 4 independent MFC(exe) projects.
Those are not related each other except input parameter.
With one input parameter, 4 projects make diffent kinds of results.
Each project does File I/O and uses even FileDialog.
I tried to put each project on each property page.
(using copy and paste)
However, I faced some serious problem.
Each project has OnInitDialog function, but each property page doesn't have it.
Can I just add this function on each property page?
(Actually I tried to do that, I couldn't get the results what I wanted.)
Without OnInitDialog, any project doesn't work properly.
I really want to combine 4 projects to one dialog box.
How can I solve this problem?
Do I have to use other methods to combine them?
Please help me.
Thank you!!!
|
|
|
|
|
Try to do your one-time-initialisation in the OnSetActive() of the page, but guarded by a bool to be called only the first time.
My opinions may have changed, but not the fact that I am right.
|
|
|
|
|
I don't understand... I have used for a long the property sheet and each page has its OnInitDialog function (If I have needed it, of course...).
The only problem is that property pages are not created until they have been focused unless you set this flag in their creations: PSP_PREMATURE
from MSDN:
PSP_PREMATURE Causes the page to be created when the property sheet is created. If this flag is not specified, the page will not be created until it is selected the first time.
Hope this helps...
|
|
|
|
|
I am writing a program which runs just fine in the computer where I am developing it. The OS is Windows XP. Since I wanted someone else to see my program I tried to run it on an old laptop that I have which runs on Windows 95. Unfortunately I got an error generated with _com_error which says:
Error Number: 0x80040154
Error Message: Class not registered.
I fixed this error by installing DCom95 and MDAC 2.5 Service pack 3 because they were required for windows 95.
However I get another error which says:
Error Number: 0x80004002
Error Message: No such interface supported.
This is part of the code
// Initialize the COM environment
if( FAILED( hr = ::CoInitialize( NULL ) ) )
{
_com_issue_error( hr );
}
// Create a connection with the database
// THE FIRST TIME THE PROGRAM WOULD FAIL RIGHT HERE
if( FAILED( hr = m_pConn.CreateInstance( __uuidof( Connection ) ) ) )
{
_com_issue_error( hr );
} // end if
m_pConn->Open(L"Provider=Microsoft.Jet.OLEDB.3.0;\
Data Source=SomeDbFile.mdb;",
L"", L"", adOpenUnspecified );
// NOW IT FAILS RIGHT HERE
// Create an instance of Command
if( FAILED( hr = m_pCmd.CreateInstance( __uuidof( Command ) ) ) )
{
_com_issue_error( hr );
} // end if
Besides installing DCOM95 and MDAC Is there anything that I can do to to make the program run in Windows 95?
none
|
|
|
|
|
hey i have the following code in C using the win32 api (not MFC)
<br />
HWND CreateMYToolbar(HWND hWnd,HINSTANCE hInst){<br />
HWND hToolbar;<br />
TBADDBITMAP tbab;<br />
TBBUTTON tbb[3];<br />
DWORD dwToolbarStyle = WS_CHILD | WS_BORDER | WS_VISIBLE | TBSTYLE_TOOLTIPS;<br />
<br />
hToolbar = CreateWindowEx(0, TOOLBARCLASSNAME, NULL, dwToolbarStyle, 0, 0, 0, 0, hWnd, NULL, hInst, NULL);<br />
<br />
SendMessage(hToolbar, TB_BUTTONSTRUCTSIZE, (WPARAM)sizeof(TBBUTTON), 0);<br />
<br />
tbab.hInst = hInst;<br />
tbab.nID = idToolbar;<br />
SendMessage(hToolbar, TB_ADDBITMAP, 1, (LPARAM)&tbab);<br />
<br />
ZeroMemory(tbb, sizeof(tbb));<br />
<br />
tbb[0].iBitmap = 1;<br />
tbb[0].fsState = TBSTATE_ENABLED;<br />
tbb[0].fsStyle = TBSTYLE_BUTTON;<br />
tbb[0].idCommand = FIRST_COMMAND;<br />
<br />
tbb[1].iBitmap = 2;<br />
tbb[1].fsState = TBSTATE_ENABLED;<br />
tbb[1].fsStyle = TBSTYLE_BUTTON;<br />
tbb[1].idCommand = SECOND_COMMAND;<br />
<br />
tbb[2].iBitmap = 3;<br />
tbb[2].fsState = TBSTATE_ENABLED;<br />
tbb[2].fsStyle = TBSTYLE_BUTTON;<br />
tbb[2].idCommand = THIRD_COMMAND;<br />
<br />
SendMessage(hToolbar, TB_ADDBUTTONS, 3, (LPARAM)&tbb);<br />
<br />
return hToolbar;<br />
}<br />
ibitmap is a bitmap image in the resource file.
the code compiles but the application crashes when it is started. the other problem is when i did actually have this code working the bitmap didnt show up on the buttons..can anyone show me an example of using the win32 api and common controls to create a toolbar and use bitmap images from resource, or fix the code above so it works
thanks in advance. go easy on a beginner
julan
|
|
|
|
|
I need to map the Right Mouse Button Click
on a control being part of a CFormView.
OnRButtonDown function maps mouse click
only in the CFormView and not in its clients
controls.
WM_MOUSEACTIVATE message works even for
my window even for its client controls but
maps all mouse buttons.
What can I do ??
How can I check mouse buttons status when
WM_MOUSEACTIVATE button is received ??
It there another solution ??
Thanks a lot !!!
|
|
|
|
|
Hi all,
I have a console c++ application, and I would like to know what I need to do to add the MFC GUI interface to my consol application (legacy classes changes? calling conversion?).
10X.
|
|
|
|
|
O.K friend You can do that.
To do that in simpler way,
->start a new project.
->Win32 Console aplication.
->click next
->select "An Application that supports MFC"
or see the code generated in this method and copy the MFC initialization code and then use that in your console application.
Do remember you need to initialize MFC then only you can use it.
now you are o.k. you can use the MFC functionality without any problem.
if you need any help that i can do feel free to contact me at
harinath@vandemataram.com
Harinath Reddy
HOneywell Technology Solutions Lab,
Bangalore,
India-560076
harinath@vandemataram.com
|
|
|
|
|
I have created a thread with "MyFunc" function (see below). "MyFunc" call dialog, which release semaphore. And after I have called "WaitForSingleObject" - the app hanged.
Please help me to solved this problem
typedef struct _THREAD_PARAM
{
HANDLE m_hSemaphor;
} THREAD_PARAM;
CMyDlg::CMyDlg(HWND *phWnd, void *pData, CWnd* pParent /*=NULL*/)
: CDialog(CReadSmblDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CReadSmblDlg)
m_sEdit = _T("");
//}}AFX_DATA_INIT
m_phWnd = phWnd;
m_hSemaphor = NULL;
m_pData = (THREAD_PARAM*)pData;
}
BOOL CMyDlg::OnInitDialog()
{
CDialog::OnInitDialog();
this->GetDlgItem ( IDC_EDIT )->SetFocus ();
m_sEdit = "";
UpdateData ( FALSE );
*m_phWnd = this->m_hWnd;
if ( m_pData->m_hSemaphor )
ReleaseSemaphore ( m_pData->m_hSemaphor, 1, NULL );
return TRUE;
}
UINT MyFunc(LPVOID p)
{
CMyDlg dlg ( &g_hWnd, (THREAD_PARAM*)p, AfxGetMainWnd() );
if ( dlg.DoModal() == IDCANCEL )
g_hWnd = NULL;
return 0;
}
{
....
g_hWnd = NULL;
THREAD_PARAM *pData = new THREAD_PARAM;
if ( !pData )
return;
pData->m_hSemaphor = CreateSemaphore ( NULL, 0, 0x7FFFFFFF, NULL );
if( !pData->m_hSemaphor )
return;
AfxBeginThread ( MyFunc, pData );
WaitForSingleObject ( pData->m_hSemaphor, INFINITE );
...
}
|
|
|
|
|
I need just to have an ie control window in my dialogbox.... something like the popup who appear when you login into messenger chat....
I have a simplest win32 console application, without MFC.
I maked CreateDialog, to open a dialog box window, from a dialog resource.
In that dialog i put an dll control of Microsoft Web Browser Object, from controls.
How to connect to that object and tell him Navigate2 ?
(with mfc is very simple is automatticaly link a m_spBrowser variable....)
Adrian Bacaianu
|
|
|
|
|
 Problem in changing the progress abr color
I want to incrementing in a progress bar in loop
for(int i = 0; i < 3800; i++){
m_pb1.SetPos(i);
}
I just want to change the color of progress bar(i.e from blue to something else) and want to show the percentage of progress inside the progress bar. (i.e if 80% of the bar is colored then "Usage = 80%" should appear inside the progress bar).
The following code is taken from a working project but it is not working in my program.
m_pb1.SetTextFormat("Usage : %d%%", PBS_SHOW_PERCENT);
m_pb1.SetGradientColors(RGB(206,255,157),RGB(0,130,0));
m_pb1.Invalidate();
Plz suggest me the way of doing so.
Reply me soon
|
|
|
|
|
Hello all,
In MFC programming, I get the following data strucutre, and I find the CList seems not working as I want.
The data structure looks like:
//(in the .h file)
typedef CList<cstring,cstring> obj_map_list_type;
CMapStringToOb obj_map;
where each element in the obj_map is a clist type as obj_map_list_type.
I use the obj_map like:
//(in my .cpp file)
obj_map_list_type * obj_map_list;
obj_map_list = new obj_map_list_type;
obj_map_list->AddTail("AAAAAAA");
obj_map_list->AddTail("BBBBbB");
obj_map.SetAt("ABC", obj_map_list);
......
Surely, it is clear that my goal is to construct a CMapStringToOb map, in which each element is a CList containing a list of string.
However, when I try to retrieve the saved data, it is not working. The following code follows the previous code:
//(in my .cpp file)
POSITION pos, kk2;
obj_map_list_type obj;
CString key;
int int_jj;
pos=obj_map.GetStartPosition();
while (pos!=NULL)
{
obj_map.GetNextAssoc(pos, key, (CObject*&) obj);
kk2=obj.GetHeadPosition();
// from debug, I see the kk2 returned is NULL !! strange?
int_jj=obj.GetCount();
// it is strange that int_jj's value is zero!
while (kk2!=NULL) // so this while is never executed.
{
key=obj.GetNext(kk2);
};
};
About the data type convertation in the GetNextAssoc, if I write it like:
obj_map.GetNextAssoc(pos, key, obj);
The compiler will say:
GetNextAssoc' : cannot convert parameter 3 from 'class CList<class cstring,class="" cstring="">' to 'class CObject *&
Anyone has any idea why my CList data can not be retrieved?
Thanks a lot and have a nice day.
|
|
|
|
|
You are storing pointers to your list inside the map, but are trying to retrieve it as an object.
Kevein wrote:
obj_map.GetNextAssoc(pos, key, (CObject*&) obj);
obj is declared as obj_map_list_type rather than as a obj_map_list_type pointer.
Dave
http://www.cloudsofheaven.org
|
|
|
|
|
Thanks. I agree.
But how to change it?
I first new a obj_map_list_type type CList pointer,
give its values,
but how to save this pointer's pointed content to the map?
The map's SetAt function really not smart. :-p
Thanks again.
obj_map_list = new obj_map_list_type;
obj_map_list->AddTail("AAAAAAA");
obj_map_list->AddTail("BBBBBB");
obj_map.SetAt("ABC", obj_map_list);
|
|
|
|
|
Since you are using CStringToObMap, you store pointers in the map, not the objects themselves. To retrieve it again, you need to retrieve the pointer:
CStringList* pList = new CStringList();
// Add stuff to pList...
mapMyMap.SetAt( "Blah", pList );
// Retrieve it
CStringList* pList;
CString sKey;
for ( POSITION pos = mapMyMap.GetStartPosition() ; pos != NULL ; )
{
mapMyMap.GetNextAssoc( pos, sKey, (CObject*&)pList );
// Now access the list through pList
}
The difference here is that we are casting a pointer to the string list to a pointer to a CObject pointer (which is legal since CStringList is derived from CObject), rather than a CStringList object to a CObject pointer, which is never legal.
Dave
http://www.cloudsofheaven.org
|
|
|
|
|
Many thanks for nice explanation.
It works.
Have a nice day!~
|
|
|
|
|
As Dave said, you need to remember what's a pointer. Change this:
POSITION pos, kk2;
obj_map_list_type obj;
CString key;
to this:
POSITION pos, kk2;
obj_map_list_type* obj;
CString key;
and this:
kk2=obj.GetHeadPosition();
int_jj=obj.GetCount();
while (kk2!=NULL)
{
key=obj.GetNext(kk2);
}
to this:
kk2=obj->GetHeadPosition();
int_jj=obj->GetCount();
while (kk2!=NULL)
{
key=obj->GetNext(kk2);
}
You should also check out std::list<> and std::map<>, which allow type checking and are a whole lot less messy than the archaic CMap and CList.
---
Not one of them, IMO, should be called beer. Maybe malt flavored mineral water.
- Jörgen Sigvardsson on Bud, Coors and Miller
|
|
|
|
|
Thanks a lot for your demo code.
Have a nice day!~
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
