show me how the child dialog's edit control can input message
时间: 2024-01-30 10:02:07 浏览: 20
To allow input in the child dialog's edit control, you can follow these steps:
1. Add an edit control to the child dialog resource using the dialog editor in your development environment. Set the control's ID to a unique value, such as IDC_CHILD_EDIT.
2. In the child dialog's window procedure, handle the WM_INITDIALOG message to obtain a handle to the edit control. You can use the GetDlgItem function to retrieve the handle based on the control's ID. Store the handle in a member variable of the dialog class.
3. Handle the WM_COMMAND message to process the user's input. You can check the LOWORD of the wParam parameter to determine the control that generated the message. If it matches the ID of the edit control, you can retrieve the text entered by the user using the GetWindowText function.
4. You can then process the user's input as needed, such as by sending it to the main window for further processing or displaying it in the child dialog.
Here is an example of handling the WM_INITDIALOG and WM_COMMAND messages for the child dialog:
```
BOOL CALLBACK ChildDialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
static HWND hEdit = NULL;
switch(uMsg)
{
case WM_INITDIALOG:
// Get handle to edit control
hEdit = GetDlgItem(hwndDlg, IDC_CHILD_EDIT);
return TRUE;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDC_CHILD_EDIT:
if(HIWORD(wParam) == EN_CHANGE)
{
// Edit control text has changed
char szText[256];
GetWindowText(hEdit, szText, 256);
// Process user input as needed
}
break;
// Handle other controls as needed
default:
break;
}
break;
// Handle other messages as needed
default:
break;
}
return FALSE;
}
```