Thread: Radio button linked to text box

Hi All,
How do I go about linking a text box to a radio button.
What I need is this:
I have 2 radio buttons in the same group: Yes and NO
When Yes is clicked I want a text box to be enabled. If No is clicked, then the textbox will stay disabled.

Any help would be great
Thanks,
Donal

Declare 3 HWND's (ie: hYes, hNo, hText). Check for WM_COMMAND messages and check the (HWND)lparam to see if it matches the hYes or hNo button.

What would I assign these HWND's to?

In your WindowProc under case WM_CREATE you'd assign them when you create the radio buttons. ie:

Code:

//global declare
HWND hBtn=NULL;
//in your WindowProc, case WM_CREATE:
hBtn=CreateWindowEx(0,"Button","Click Here",WS_VISIBLE, 
 WS_CHILD | BS_DEFPUSHBUTTON,10,10,120,30,hWnd,
 NULL,hInstance,NULL);

In this example it creates a regular pushbutton. hWnd is the HWND passed to your WindowProc (your main window's HWND) and hInstMain would be the global HINSTANCE for your main window).

Hi jdinger,
I'm creating resources using VC++. So I can't get the HWND for the button the way you specified. Is there a function for returning the HWND of my radio button to hBtn?
Thanks,
Donal

Yes you can. Check out my signature. I use MSVC++ 6. You can get the HWND like that. In your WindowProc under case WM_COMMAND you'd just use:

Code:

if((HWND)lParam==hBtn1)
{
  //do stuff here
}
else if((HWND)lParam==hBtn2)
{
  //do different stuff here
}

But how do you get hBtn1 to be a HWND for IDC_RADIO1 without
using the CreateWindowEx() function????

Tks,
Donal

Ah! You didn't mention that you were using MFC. I have very little experience with MFC but you can check here. I'll look into it and when I find something I'll post it here for you.

Thanks for you help
Donal