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Re: Problem with opening file... please read. Christian Graus7-May-02 11:36 Christian Graus 7-May-02 11:36  I'll just add that if you read this file using an ifstream you'd probably find the code a lot simpler as well as safer. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. And you don't spend much time with the opposite sex working day and night, unless the pizza delivery person happens to be young, cute, single and female. I can assure you, I've consumed more than a programmer's allotment of pizza, and these conditions have never aligned. - Christopher Duncan - 18/04/2002 How do i catch the event when a CheckBox has been clicked? And how do i find out if it's checked or unchecked? 7-May-02 7:20 7-May-02 7:20  Thankyou ) Re: How do i catch the event when a CheckBox has been clicked? And how do i find out if it's checked or unchecked? Chris Losinger7-May-02 7:30 Chris Losinger 7-May-02 7:30  use classwizard. find your dialog item, add a handler for BN_CLICKED. then use CButton::GetCheck to test the checked state -c There ain't no second chance Against the thing with the forty eyes, girl Smaller Animals Software Re: How do i catch the event when a CheckBox has been clicked? And how do i find out if it's checked or unchecked? redeemer7-May-02 7:34 redeemer 7-May-02 7:34  But eh thing is i'm not using MFC. I know that i should look for the WM_COMMAND code in the uMsg parameter and the control name IDC_ID3TAG in the wParam, but i don't know how to find out if it's checked or not. Re: How do i catch the event when a CheckBox has been clicked? And how do i find out if it's checked or unchecked? Ravi Bhavnani7-May-02 7:39 Ravi Bhavnani 7-May-02 7:39  Here's how: long nResult = SendMessage (hwndCheckBox, BM_GETCHECK, 0, 0); bool bChecked = (nResult == BST_CHECKED); /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Clipboard notification User 66587-May-02 7:01 User 6658 7-May-02 7:01  Hi! Is there a better way to check whether the data in a clipboard has changed instead of checking the content every few seconds with a timer? Perhaps there is a kind of notification? /edit: I just found the message WM_DRAWCLIPBOARD - is it what I'm searching for? thanks in advance regards modified 12-Sep-18 21:01pm. Yup 7-May-02 7:22 7-May-02 7:22  From MSDN: The WM_DRAWCLIPBOARD message is sent to the first window in the clipboard viewer chain when the content of the clipboard changes. This enables a clipboard viewer window to display the new content of the clipboard. who knows that? Atilla Selem7-May-02 6:38 Atilla Selem 7-May-02 6:38  how can i be able to display my custom Context Menu when i right-clicked in an EditBox instead of default EditBox context menu (Undo, copy, paste..etc)? that would be really helpful for me... Thanks for ur help Atilla Selem just listening to you... Re: who knows that? Chris Losinger7-May-02 6:49 Chris Losinger 7-May-02 6:49  try the edit control section of this site... or... http://www.codeproject.com/useritems/cmenuedit.asp -c I don't care, and you can't make me. Smaller Animals Software Drag and Drop bitmaps !!! Hadi Rezaee7-May-02 4:56 Hadi Rezaee 7-May-02 4:56  Hi again, Did you see Solitaire game(I'm sure you saw that !). I want to know, how can drag and drop pictures like that ? Please help me ... My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie Re: Drag and Drop bitmaps !!! Chris Hambleton7-May-02 5:23 Chris Hambleton 7-May-02 5:23  Hi, I had to do the same thing about a year ago for my card game and it works great: (UltraUno -- http://www.outreach4him.50megs.com/UltraUno/ -- yes, this is a plug! ) I found Chris Maunder's article on bitmap controls very useful, but it looks like the link is broken (not sure who I would notify to fix it): http://www.codeproject.com/bitmap/bitmappicture.asp His control is derived from a CStatic, and the way I did the drag and drop stuff is to create one CBitmapPicture controls in the view and use the WM_LBUTTONDOWN to see if the user clicked the bitmap control. I set a flag and then track the WM_MOUSEMOVE messages and move the bitmap around based upon the initial coordinates and the current coordinates. When the WM_LBUTTONUP msg is received, I release the capture on the bitmap control. If needbe, I can e-mail you a code sample directly... Chris Re: Drag and Drop bitmaps !!! Hadi Rezaee7-May-02 5:43 Hadi Rezaee 7-May-02 5:43  Hello Chris, Thanks aloooooooooooot for your help I see your game, that was prefect ... YES, i'm intrested to have your source code. If possible please send it to hadi_rezaie@yahoo.com Thx aloooooooooot ! My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie Q: how to obtain interface pointer for ATL ActiveX control in an MFC app Gil Clark7-May-02 4:53 Gil Clark 7-May-02 4:53  OK, I'm relatively new to ATL/ActiveX/COM. We have an MFC application (CView and CDialog usage) built with VC++6 SP5. I am in the process of creating an ActiveX control (via ATL) that will be used by this application, but I'm having a problem. I can insert the control onto the template in the resource editor and it shows up. I run the application and the control functions properly. But I need to have access to the interface of that control. I used: CAxWindow m_axTheControlWindow; CComPtr<ITheControlInterface> m_ctlTheControl; CWnd* pControl = GetDlgItem(IDC_THECONTROLID); if (pControl) { m_axTheControlWindow.Attach(pControl->GetSafeHwnd()); hr = m_axTheControlWindow.QueryControl(&m_ctlTheControl); if (FAILED(hr) || !m_ctlTheControl) { ATLASSERT(false); } } but QueryControl returns E_FAIL and m_ctlTheControl is NULL. I guess it has something to do with how MFC keeps track of OLE controls (COleControlContainer) ??? Perhaps the only way I could communicate with this control would be via IDispatch? The control was create via the VC++ Insert | New ATL Object... wizard. It's a Full Control (Single Threaded, Dual interface, No aggregation, Support ISupportErrorInfo, support connection points, not based on another control, normalize dc, insertable, opaque, solid background, no stock properties). Now, this is just the bare-bones wizard code. Nothing has been implemented as far as IDispatch or ISupportErrorInfo or connection points beyond what the wizard gives, but I didn't want to go too far before finding out it wasn't going to work. Thanks for any help. Gil Re: Q: how to obtain interface pointer for ATL ActiveX control in an MFC app Gil Clark8-May-02 7:13 Gil Clark 8-May-02 7:13  OK, now that this is buried deep it probably won't be seen, but a co-worker of mine has helped me figure this out. CWnd* pControl = GetDlgItem(IDC_THECONTROLID); if (pControl) { pControl->EnableAutomation(); IUnknown* pUnk = pControl->GetControlUnknown(); CComQIPtr<ITheControl> pIFace(pUnk); if(pIFace) { pIFace->AControlMethod(value); } } Display a dialog box from a DLL COM Jerome Conus7-May-02 4:38 Jerome Conus 7-May-02 4:38  Hi ! I started to develop an ATL object with VC++ 6.0. The COM object is a DLL, supporting the MFC. In some particular situation, I need to display a dialog box. I created a new class, derived from CDialog, as I usually do with a normal MFC application (Let's call this class CTestDlg). In the ATL class, I added a member of type of my dialog class (CTestDlg m_myDialog), and when I want to display it, I do : m_myDialog.DoModal(); When I run this COM object, at the moment of displaying the dialog, I get an ASSERT error. In the debugger, the failed assertion is : ASSERT(afxCurrentResourceHandle != NULL) which is called in the function CDialog::OnInitDialog() I'm now wondering if a COM Dll is able to display a dialog box, and if yes, how I'm supposed to do it !!! Any help will be greatly appreciated ! Thank you ! Jerome Re: Display a dialog box from a DLL COM Chris Losinger7-May-02 5:08 Chris Losinger 7-May-02 5:08  yes, it's possible to do this (i do it all the time). 1. where are you calling DoModal ? (don't do it in the ATL object's constructor) 2. are you using that little MFC context macro (forget what it is, but you see it at the top of methods that use MFC...) ? -c I don't care, and you can't make me. Smaller Animals Software Re: Display a dialog box from a DLL COM Jerome Conus7-May-02 5:13 Jerome Conus 7-May-02 5:13  Chris Losinger wrote: 1. where are you calling DoModal ? (don't do it in the ATL object's constructor) From a method which is part of my interface. 2. are you using that little MFC context macro (forget what it is, but you see it at the top of methods that use MFC...) ? ...mmm....nope, I didn't find any context stuff.... Jerome Re: Display a dialog box from a DLL COM Jonathan Craig7-May-02 5:46 Jonathan Craig 7-May-02 5:46  Chris is refering to the AFX_MANAGE_STATE(AfxGetStaticModuleState()) macro that gets added to ATL method when added thought the Class View add method option. This is needed so the application looks at the right resource table when executing the ATL methods. If your ATL object is using its own resources (dialogs, bitmaps, cursors, etc.) you must call the manage state macro. Hope this helps... Jonathan Craig www.mcw-tech.com Re: Display a dialog box from a DLL COM Jerome Conus7-May-02 5:55 Jerome Conus 7-May-02 5:55  Ok....I'm making some progress. I have this AFX_MANAGE_STATE in each of my methods of my interface. I figured out what I was doing wrong. I tried to display a dialog box, derived from CDialog. Now, I used the 'Insert ATL Object->Miscellaneous->Dialog' to create my dialog. I have a problem remaining though : I have a CListBox in my dialog box, and when I do CListBox* pList=(CListBox*)GetDlgItem(IDC_LIST); it works, but then, when I do pList->AddString("Test"); I have an ASSERTION failure. Do you have any idea how I could use the ListBox control (and any other controls ?) Thanks ! Jerome does CTreeCtrl have this function? 7-May-02 4:23 7-May-02 4:23  hi, I want to get the index of the element clicked in a tree.I can get total elements but can I get the index or relative position of the element I clicked?It may be even in the child nodes. I have figured out a way but it seems too complicated so wanted to check first; but again it may be how the function would have operated if existed,I dont know. So,can I? Sorry about the premature entry waiting. Re: does CTreeCtrl have this function? Philip Patrick7-May-02 6:35 Philip Patrick 7-May-02 6:35  Nope, there is no index in CTreeCtrl. You can only enumerate thru items and count them manually Philip Patrick Web-site: www.stpworks.com "Two beer or not two beer?" Shakesbeer Need Web-based database administrator? You already have it! Re: does CTreeCtrl have this function? Joel Lucsy7-May-02 11:33 Joel Lucsy 7-May-02 11:33  A method would be to store an index in the items data: SetItemData. Then when you need: GetItemData. Joel Lucsy (jjlucsy@ameritech.net) does CTreeCtrl have this fuction? 7-May-02 4:19 7-May-02 4:19  hi, I want to get the index of the element clicked in a tree.I can get total elements but can I get the index or position of the element I clicked? Re: does CTreeCtrl have this fuction? Chris Losinger7-May-02 4:26 Chris Losinger 7-May-02 4:26  CTreeCtrl::GetSelectedItem -c I don't care, and you can't make me. Smaller Animals Software Some DLL questions !!! Hadi Rezaee7-May-02 4:15 Hadi Rezaee 7-May-02 4:15  Hi there, Please answer to my questions about DLL … Q1. I want to write simple function in a Win32 DLL project … And call that by LoadLibrary … I made a Win32 DLL project … Then I wrote this function in .h file: __declspec(dllexport) void SayHello(); And I wrote it in .cpp file: void SayHello() { MessageBox(NULL, “Helllllllllo !”, “Info”, MB_ICONINFORMATION); } Then I compiled it without any problem … In my MFC exe project … I loaded that: CoInitialize(NULL); HMODULE hModule = LoadLibrary( "test4.dll" ); FARPROC procFunc; procFunc = GetProcAddress(hModule, "SayHello"); (procFunc)(); FreeLibrary(hModule); CoUninitialize(); There is no problem in DLL path file, I checked it … But when I run this code, program show me this error: “Unhandled exception in testdll.exe : 0x0000005 : Access violation.” What is my wrong ? Q2. If I write a DLL by MFC DLL, can I use of that from other programming language like Delphi or VB ? My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie

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