communication to a child class

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Hello all,

In my app I open a dialog when a button is clicked.

CGet_DataDlg* obj_Get = new CGet_DataDlg;
obj_Get->setParent(this);

obj_Get->Create(IDD_GET_DATA,this);
CRect rect;
this->GetWindowRect(rect);
        obj_Get->SetWindowPos(&CWnd::wndTop,rect.left+17,rect.top+56,907,127,SWP_SHOWWINDOW);
obj_Get->ShowWindow(SW_SHOW);

The new dialog will still allow the user to click other buttons in the main dialog.

According to the buttons the user clicks in the main dialog
But how can I tell the child that there is a button pressed in the main?

Thanks to all!

Posted 18-Oct-12 3:02am

Blob_Dlg

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[no name] 18-Oct-12 9:19am

Create an event

Argonia 18-Oct-12 10:21am

You can try sending a message

2 solutions

Solution 2

You can do that, but you really don't have to. If there is any business logic, dependent on some button in the main window, just call directly that logic. Split the message business logic, look and message handling logic (Model/View/Controller). Let the messages to happen, and don't multiplicate them.

Posted 19-Oct-12 5:47am

armagedescu

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icerlion · Accepted Answer · 2012-10-18T04:36:00

You can hold the HWND of the child windows in the parent windows. When you detech the button of parent windows was clicked, you can send a message to the child windows as you hold the HWND of the child, some code like the following:

::SendMessage(hwndChild, WM_URSE_MESSAGE, NULL, NULL).

Then you can receive the message in your child windows and process the message as you thinking.