Creating a popup window to get user input.

[2NywAqkS]

I've got an opengl window, that uses winsock, but at the start I'd like a popup window to get the IP from the user. How would I go about doing this?

Thanks,
Rowan.

[modoran]

Use a modal dialog and use standard ip address control.

[2NywAqkS]

I'm finding it hard to find any decent tutorials on modal dialog boxes.
Is it simple? could you please give an example

[soranz]

http://www.codeproject.com/Articles/1651/Tutorial-Modeless-Dialogs-with-MFC
The title is modeless but there's alot of info and comparisons to modal dialogs that I found helpful...
It's not hard, but it takes a lot of jumping around the code at first until u see how it's all connected. Maybe create a side project just to experiment with this ?

[S G H]

That's MFC, if you want clean WINAPI, get ResEdit and create your Dialog with a IP Address Control, and a OK button, then change your Window Message Handler for the appropriate use.

[2NywAqkS]

Thanks, I also found this tool quite helpful; http://www.resedit.net/

[S G H]

That's ResEdit, as I said. ;)

[2NywAqkS]

Sorry to reopen the topic but I'm finding it difficult to get the IP as a char * from the ip address control. I know I have to use IPM_GETADDRESS, but I'm not sure how to use it.

[S G H]

BYTE IP[4] = {0};
DWORD IP_Ext = 0;
SendMessage((IP Control Window Handle),IPM_GETADDRESS,0,(LPARAM)(&IP_Ext));
IP[0] = FIRST_IPADDRESS(IP_Ext);
IP[1] = SECOND_IPADDRESS(IP_Ext);
IP[2] = THIRD_IPADDRESS(IP_Ext);
IP[3] = FOURTH_IPADDRESS(IP_Ext);
// In a 255.128.64.32 input from the window:
// IP[0] = 255
// IP[1] = 128
// IP[2] = 64
// IP[3] = 32 

From: http://msdn.microsoft.com/en-us/library/windows/desktop/bb761378(v=vs.85).aspx

[2NywAqkS]

hmm either I'm not coverting it to a char * correctly or somthing else becuase this just says it's equal to 0 (and I'm not entering 0)

LRESULT CALLBACK DlgProc(HWND hWndDlg, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	switch(Msg)
	{
	case WM_INITDIALOG:
		return TRUE;

	case WM_COMMAND:
		switch(wParam)
		{
		case IDOK:
			{
				BYTE IP[4] = {0};
				DWORD IP_Ext = 0;
				SendMessage(hWndDlg,IPM_GETADDRESS,0,(LPARAM)(&IP_Ext));
				IP[0] = FIRST_IPADDRESS(IP_Ext);
				IP[1] = SECOND_IPADDRESS(IP_Ext);
				IP[2] = THIRD_IPADDRESS(IP_Ext);
				IP[3] = FOURTH_IPADDRESS(IP_Ext);
				char buf[100];
				sprintf(buf, "%d", IP_Ext);
				MessageBox(hWnd,buf,"IP", MB_OK);
				EndDialog(hWndDlg, 0);
			return TRUE;
		}
		break;
		}
	}

	return FALSE;
}

[S G H]

Ho, you should use it like:
sprintf(buf, "%d.%d.%d.%d",(int)IP[0],(int)IP[1],(int)IP[2],(int)IP[3]);
And for safety reasons, use snprintf like:
snprintf(buf,100,......)

And if it says it's 0... IDK, are you sure you're entering all parameters? Also try checking if SendMessage returns 4.

[modoran]

If have trouble using the ip control, then you could use a regular edit control, but you need to do the validation yourself in that case.

[2NywAqkS]

I decided to go with your plan modoran. Using
SendMessage(hWndDlg,WM_GETTEXT,sizeof(buffer)/sizeof(buffer[0]),reinterpret_cast<LPARAM>(buffer));
apparantly returns "enter server ip" which is the caption on the dialog box. How to I specify to get the text from the edit control?

[S G H]

Oh, you're doing everything wrong!

// With the IP Control:
HWND IP_Control = GetDlgItem(hWndDlg, (ID of your IP Control like IDC_IPCTRL1) );
SendMessage(IP_Control,...);
// With the EditBox Control:
HWND Edit_Control = GetDlgItem(hWndDlg, (ID of your EditBox Control like IDC_EDIT1) );
SendMessage(Edit_Control,...);

You see, you're trying to get the IP address from your Main Window, and not from the IP Control!