problem with menu - C / C++ / MFC Discussion Boards

Re: Slider Control Why do I need CDialog::OnInitDialog();

jerry1211a28-Jun-05 8:12

28-Jun-05 8:12

Thanks...I am a SW Eng and sometimes I really struggle with MFC. Is there a place where I can get a sample dialog program that really explains all the intricate details of what is going on?? I like stepping through all the code to really understand what is happening.

You gave me some good ideas...
Have a good day.

Jerry

Re: Slider Control Why do I need CDialog::OnInitDialog();

David Crow28-Jun-05 8:20

David Crow

28-Jun-05 8:20

jerry1211a wrote:
Is there a place where I can get a sample dialog program that really explains all the intricate details of what is going on??

Just keep plugging away at it. Come up with a (small) problem, and then create a little application to solve it.

When I started using MFC back in 1993, I created dialog-based applications exclusively. The concept of a document and a view made no sense to me. It was not until the late 90s that the light bulb came on. Once I had a grasp of what role the document and view played, it opened up other possibilities.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Slider Control Why do I need CDialog::OnInitDialog();

jerry1211a28-Jun-05 8:24

jerry1211a

28-Jun-05 8:24

Ok sounds like a good plan.

Jerry

XMLDOMDocument across processes

Alex_Y28-Jun-05 6:29

Alex_Y

28-Jun-05 6:29

Is it valid to create document in one process and get node info in another process. What pointer I need to pass. I think pointer to COM object or interface are local process.

Thanks.

We yesterday got drunk with Bacchus ...

Re: XMLDOMDocument across processes

Alex_Y28-Jun-05 9:24

Alex_Y

28-Jun-05 9:24

Do I need to marshal XMLDOMDocument pointer?

We yesterday got drunk with Bacchus ...

winsock2?

nellutla28-Jun-05 6:20

nellutla

28-Jun-05 6:20

Do anyone have an example code on Winsock2 UDP written in C language for windows XP. Please help

Heaven's on me

Re: winsock2?

Trollslayer28-Jun-05 6:39

Trollslayer

28-Jun-05 6:39

Try MSDN[^].

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

problem with menu

Junyor28-Jun-05 5:56

Junyor

28-Jun-05 5:56

	<br />
CMenu menu;<br />
CMenu *sub=NULL;<br />
VERIFY(menu.LoadMenu(IDR_MENU));<br />
sub = menu.GetSubMenu(0);<br />
UINT state = sub->GetMenuState(IDC_CHOICE, MF_BYCOMMAND);<br />
ASSERT(state != 0xFFFFFFFF);<br />
if(state & MF_CHECKED)<br />
{<br />
sub->CheckMenuItem(IDC_CHOICE, MF_UNCHECKED);<br />
}<br />
else<br />
sub->CheckMenuItem(IDC_CHOICE, MF_CHECKED);<br />

Why doesn't it check or uncheck my menu item? it remains as it is initially...

Re: problem with menu

David Crow28-Jun-05 6:01

David Crow

28-Jun-05 6:01

How about:

if (state & MF_CHECKED)
    sub->CheckMenuItem(IDC_CHOICE, MF_BYPOSITION | MF_UNCHECKED);
else
    sub->CheckMenuItem(IDC_CHOICE, MF_BYPOSITION | MF_CHECKED);

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: problem with menu

Junyor28-Jun-05 9:03

Junyor

28-Jun-05 9:03

nope...but here is the problem...the if works, but CheckMenuItem doesn't...so the first part is good, it sees if the item is checked, but it doesn't change this thing.

Re: problem with menu

David Crow28-Jun-05 9:13

David Crow

28-Jun-05 9:13

I think I gave you the wrong code. MSDN states that a pop-up menu item must be checked by position since it does not have a menu-item identifier associated with it. Figure out what position IDC_CHOICE is in and use that for the first parameter to CheckMenuItem().

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Find the right active window

Member 110183628-Jun-05 5:26

Member 1101836

28-Jun-05 5:26

Hi!

I have an SDI application which, at a certain moment, creates a child dialog box. Therefore, when the app. is active, this dialog box (which is a popup window) is the active and it's really easy to get a CWnd* to it through GetActiveWindow().
The problem arises when the user switched to another app. (using Alt+tab for example) this function returns NULL. How can I find which window was active before my app. lose focus ?

Thanks for help

Re: Find the right active window

David Crow28-Jun-05 5:56

David Crow

28-Jun-05 5:56

Y.Cohen wrote:
How can I find which window was active before my app. lose focus ?

Check out the WM_ACTIVATE and WM_ACTIVATEAPP messages.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Find the right active window

Member 110183628-Jun-05 5:58

Member 1101836

28-Jun-05 5:58

enHow ?

Re: Find the right active window

David Crow28-Jun-05 6:04

David Crow

28-Jun-05 6:04

Y.Cohen wrote:
How ?

Like you would any other message or notification:

WM_ACTIVATEAPP

WM_ACTIVATE

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Reading Text off a tool Tip

Abhishek Karnik28-Jun-05 4:35

Abhishek Karnik

28-Jun-05 4:35

Hey,
I have a list View which displays a tool tip on a mouse click. I want to read and save that information. Are there any messages that can be sent to retrieve such information. I have tried TTM_GETTOOLINFO and TTM_GETTEXT but then dont seem to work too well.
Abhishek

Dynamic control of a dialog box

bugDanny28-Jun-05 4:26

bugDanny

28-Jun-05 4:26

I want to dynamically change my dialog box. For example, if I click a check box I want text to appear or diappear, depending on the value.

Danny

Re: Dynamic control of a dialog box

David Crow28-Jun-05 4:40

David Crow

28-Jun-05 4:40

Where is this text that you want to appear or diappear?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Vague

Wes Aday28-Jun-05 4:41

Wes Aday

28-Jun-05 4:41

I might as well tell you that you are going to have to be bit more specific with your question before you will get an answer. otherwise the only thing you are going to get is: Handle the click event of the checkbox. In the handler if(checkbox.GetCheck()) show text else hide text.....

Re: Vague

bugDanny28-Jun-05 4:52

bugDanny

28-Jun-05 4:52

Sorry, I had thought I wrote it well. I meant, when I click a check box I have a static text box right next to it that I want to display either an empty string, if the check box is false, or a message, if the text box is true. I have already created member variables for the check box and the static text box.

Danny

Re: Vague

Wes Aday28-Jun-05 4:55

Wes Aday

28-Jun-05 4:55

In that case you could do something like:
if(checkbox.GetCheck())
textbox.SetWindowText("Some text");
else
textbox.SetWindowText("");

Re: Vague

David Crow28-Jun-05 5:08

David Crow

28-Jun-05 5:08

Anon E. Mouse wrote:
if(checkbox.GetCheck())

Be specific. CButton::GetCheck() is not a boolean function. If you only want to set text when the state is checked, specifically check for it:

if (checkbox.GetCheck() == BST_CHECKED)
    textbox.SetWindowText("Some text");
else if (checkbox.GetCheck() == BST_UNCHECKED)
    textbox.SetWindowText("");

Otherwise, the button may later get changed to a three-state check box and be in an indeterminate state.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Vague

Wes Aday28-Jun-05 5:17

Wes Aday

28-Jun-05 5:17

Thanks for clarifying that. That is correct.

Re: Vague

bugDanny28-Jun-05 6:28

bugDanny

28-Jun-05 6:28

DavidCrow wrote:
if (checkbox.GetCheck() == BST_CHECKED) textbox.SetWindowText("Some text");else if (checkbox.GetCheck() == BST_UNCHECKED) textbox.SetWindowText("");

Thanks, but that leaves the question, what do I use in place of 'checkbox' when I do 'checkbox.GetCheck()'? The member variable shouldn't work and I tried the ID.

Danny

Re: Vague

David Crow28-Jun-05 6:46

David Crow

28-Jun-05 6:46

bugDanny wrote:
what do I use in place of 'checkbox' when I do 'checkbox.GetCheck()'?

Whatever name you gave the member control variable.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.