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How to access View via Doc???

Raphael Kindt14-Jul-02 6:00

14-Jul-02 6:00

Hi...

If I want to use methods of CMyView via CMyDoc, I must to have a pointer to CMyView!!! How??? And is this logic to do that (does anybody do it)???

Is this a clean solution :

CMyView* pView = (CMyView*)m_viewList.GetHead();  // in CMyDocument

Thanks

Hello World!!! Smile | :)

Smile | :)

from Raphaël

Re: How to access View via Doc???

Nish Nishant14-Jul-02 8:49

14-Jul-02 8:49

Call GetFirstViewPosition, GetNextView

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Horizontal Scroll Bar and CListBox

Lucky200214-Jul-02 5:35

14-Jul-02 5:35

Hello @all!

I have got a CListBox and added a horizontal scroll bar.

Now my question: How can I get the lenght of my ListBox? Confused | :confused:

Confused | :confused:

The lenght of my string can I get through:

m_ctrlListBox.GetTextLen(0);

Correctly?

Lucky2002

Re: Horizontal Scroll Bar and CListBox

Dov Sherman14-Jul-02 5:39

14-Jul-02 5:39

m_ctrlListBox.GetCount() will return an int for the number of items in the control or LB_ERR if an error occurs.

Re: Horizontal Scroll Bar and CListBox

Lucky200214-Jul-02 5:41

14-Jul-02 5:41

I´m sorry, my mistake:

I want to know the width of my ListBox.

Lucky2002

Re: Horizontal Scroll Bar and CListBox

Dov Sherman14-Jul-02 6:10

14-Jul-02 6:10

Ah! Okay, I'm not sure if I know what you're asking but...

Use m_ctrlListBox.GetHorizontalExtent() to get the scrollable width of the list box, in pixels.

If you just want to know the screensize of the ListBox, use...

CRect rect;<br />
m_ctrlListBox.GetClientRect(&rect);<br />
rect.DeflateRect(CSize(GetSystemMetrics(SM_CXEDGE), GetSystemMetrics(SM_CYEDGE)));<br />
iWidth = rect.Width();

Re: Horizontal Scroll Bar and CListBox

Lucky200214-Jul-02 9:49

14-Jul-02 9:49

Hi!

Thank you very much! I needed the last one.
Now I have another question and hope you can help me:

I need the lenght of the strings in the ListBox. When I use

m_ctrlListBox.GetTextLenght(0)

I only get the number of variables without the blanks between the words.

Thank you!

Lucky2002

Re: Horizontal Scroll Bar and CListBox

PJ Arends14-Jul-02 15:23

14-Jul-02 15:23

Call CDC::GetTextExtent() on each string as you add them to your list control, and keep the width of the widest string as the width of your listbox.

int width = 0;
CSize size (0, 0);
CDC *pDC = m_listbox.GetDC();
int saved = pDC->SaveDC();
pDC->SelectObject(GetFont());

while (ThereIsAStringToAdd)
{
    m_listbox.AddString(TheStringToAdd);
    size = pDC->GetTextExtent(TheStringToAdd);
    width = width > size.cx ? width : size.cx;
}
pDC->RestoreDC(saved);
ReleaseDC(pDC);
m_listbox.SetHorizontalExtent(width + 5);

---
CPUA 0x5041

Sonork 100.11743 Chicken Little

Within you lies the power for good - Use it!

Re: Horizontal Scroll Bar and CListBox

Lucky200215-Jul-02 8:49

15-Jul-02 8:49

Works great!!!!

Thank you very very much ....

Rose | [Rose]

Rose | [Rose]

Rose | [Rose]

Rose | [Rose]

Dov Sherman14-Jul-02 5:29

14-Jul-02 5:29

I'm working on a Dialog-based project. The app, as usual, starts my dialog class with DoModal(). However, I sometimes want the dialog to start hidden, depending on calculations done in OnInitDialog(). I know how to use ShowWindow() but where do I control whether the dialog will *start* visible or hidden?

Re: Hidden Dialog

Joaquín M López Muñoz14-Jul-02 5:41

Joaquín M López Muñoz

14-Jul-02 5:41

Mike Dunn's C++ FAQ, §7.6, shows how to have a dialog hidden at start-up. I guess you can adapt the technique to your needs.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Hidden Dialog

Dov Sherman14-Jul-02 6:06

14-Jul-02 6:06

Thank you. I just tried it and that solution was very easy to adapt successfully. I guess I should have checked the FAQs first. Blush | :O

Blush | :O

Venet14-Jul-02 4:21

14-Jul-02 4:21

Ok this is a simple question.

Can you have all DialogBoxes, TextBoxes, resources etc in DLL, and then have .exe file call some kind of initialisation function contained in DLL that would start whatever application is supposed to do.

Are there any problems with this. I haven't tried implementing myself.
[thinkig in terms of Win32 API]

Regards,
Venet.

--------
Black holes are where God divided by zero.(Steven Wright)

Emilio Guijarro14-Jul-02 5:31

Emilio Guijarro

14-Jul-02 5:31

No problem, but you have to be careful when loading resources, because you need the instance handle; and a simple call to GetModuleHandle(NULL) will not give it to you (it will return the calling exe), so you need to get it in the DllMain function and use for all resource loading tasks.

I can´t see more problems actually...

"nobody knows it, but you´ve got a secret smile, and you use it only for me"

Venet14-Jul-02 10:44

14-Jul-02 10:44

Thanks

Smile | :)

Regards,
Venet.

--------
Black holes are where God divided by zero.(Steven Wright)

Mazdak14-Jul-02 3:51

14-Jul-02 3:51

Its dumb question.

I have VS.Net.What/Where is my C compiler file?

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

Re: Compiler File

Nish Nishant14-Jul-02 4:12

14-Jul-02 4:12

C:\Program Files\Microsoft Visual Studio .NET\Vc7\bin\cl.exe

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Compiler File

Mazdak14-Jul-02 4:27

14-Jul-02 4:27

Thank you Nish. Smile | :)

Smile | :)

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

need a Doc public variable to use in CMainFrame.

ns14-Jul-02 3:33

14-Jul-02 3:33

I store the name of a user selected database in a member of the document in my MDI project. I need to access the name of the database from the CFileDialog pathname in a function in my mainframe class. If I were in a view class I'd get a pointer to the doc. But if I'm in the mainframe class, how do I get to the string variable stored in the doc?

Thanks,
ns

Re: need a Doc public variable to use in CMainFrame.

Nish Nishant14-Jul-02 3:49

14-Jul-02 3:49

GetActiveView()->GetDocument()

The first call returns the CView* and the second call returns the CDocument*. Cast the CDocument* to your CYourDocument*

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: need a Doc public variable to use in CMainFrame.

ns14-Jul-02 4:04

14-Jul-02 4:04

Okay. Thank you. I'll try it and see if I can accomplish what I want with your solution.
Appreciate your input!
ns

RegOpenKeyEx - is this correct?

ns14-Jul-02 2:45

14-Jul-02 2:45

I can see that everyone has the "SoftWare" key so the first RegOpenKeyEx will always succeed. But the second key "MyCompany" gets created for the very first time when you close the app! SO at startup, when that key isnt even there, I found that RegOpenKeyEx fails, but nothing bad happens and the program continues...

// Open the Software key under HKEY_CURRENT_USER.
RegOpenKeyEx(HKEY_CURRENT_USER, "Software",
0, KEY_ALL_ACCESS, &keyHandle1);

// Open the MyCompany key under Software.
RegOpenKeyEx(keyHandle1, "MyCompany",
0, KEY_ALL_ACCESS, &keyHandle2);

I just wanted to make sure this observation is correct, or whether I need to check for ERROR_SUCCESS etc...

Thank you,
ns

Re: RegOpenKeyEx - is this correct?

567890123414-Jul-02 3:01

14-Jul-02 3:01

RegCreateKeyEx opens key if it exists and creates it if it doesn't exist - exectly what you need in such situation.
In any case program should check return code and handle errors. For example, if you run program in Guest account, RegCreateKeyEx may fail.

ole drag and drop across application

samsoft14-Jul-02 1:40

14-Jul-02 1:40

I have a CformView containg a list ctrl and other application also is the same.Files are displayed with icons in list ctrls ,i need to drag and drop from one list ctrl to another and vice versa.Plz help me as the deadline for the project is abt to be finished. Confused | :confused:

Confused | :confused:

number validation

slah13-Jul-02 23:27

13-Jul-02 23:27

i have an edit control on dialog box and i am not using MFC, i want to validate that only numbers should be entered in the field. what is the possible way out. help me out PLZ

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