C / C++ / MFC

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

Find the right active window

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

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

Re: Find the right active window

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

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

Reading Text off a tool Tip

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

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

Re: Dynamic control of a dialog box

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

David Crow28-Jun-05 4:40

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.....

bugDanny28-Jun-05 4:52

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

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("");

David Crow28-Jun-05 5:08

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

Wes Aday28-Jun-05 5:17

Wes Aday

28-Jun-05 5:17

Thanks for clarifying that. That is correct.

bugDanny28-Jun-05 6:28

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

David Crow28-Jun-05 6:46

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

bugDanny28-Jun-05 6:55

28-Jun-05 6:55

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

Whatever name you gave the member control variable.

No, using the member veriable name doesn't work. I get the error "left of '.GetCheck' must have class/struct/union type. The same when trying to change the static text box.

Danny

David Crow28-Jun-05 7:06

28-Jun-05 7:06

checkbox should be a CButton, and textbox should be a CStatic.

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

bugDanny28-Jun-05 7:23

28-Jun-05 7:23

DavidCrow wrote:
checkbox should be a CButton, and textbox should be a CStatic.

I suppose I really was too vague in the first place. The above suggestions do not work because I never hand created a CButton or CStatic for these controls. checkbox should be the name of an instantiated CButton and textbox should be name of an instantiated CStatic, but since I never instantiated these I can't do that. I only put a static text box control onto the dialog and a checkbox control and set the ID and member variable names. Shouldn't there be a simpler way, like a refresh() function (I checked help and the refresh commands were for other languages. Maybe it's named something else for C++)

Danny

David Crow28-Jun-05 7:33