Displaying Text on MDI child windows

I am trying to display text on child windows. I made a handler for double clicks to display "hello world" on the current window, but it doesn't work. I have tried both DrawText and TextOut functions.

Code:

---

void CMDITest1View::OnLButtonDblClk(UINT nFlags, CPoint point)
{
        CDC* dc;
        char msg[] = "Hello World";

        dc = GetDC();
        dc->TextOut(0, 0, msg, -1);

        return;
}

---

Thanks for any help.

try SetWindowText() and see if that's what you're looking for. If you need a handle to a dialog resource identifier you can use GetDlgItem() to get the HWND handle.

Your arguments in TextOut are wrong ...

Code:

---

void CMDITest1View::OnLButtonDblClk(UINT nFlags, CPoint point)
{
        CDC* dc;
        char msg[] = "Hello World";

        dc = GetDC(hwnd);
        TextOut(dc, 0, 0, msg, sizeof(msg) / sizeof(msg[0]);

        return;
}

---

Your GetDC is wrong !

Your TextOut is wrong !
-1 as argument is only valid in DrawText, not in TextOut, also you've forgot the device context as first argument !


Greetz
Greenhorn

Thank you. I got it to work with:

Code:

---

void CMDITest2View::OnLButtonDown(UINT nFlags, CPoint point)
{
        CClientDC dc(this);
        CRect rect;
        CString string;

        string = "Hello World!";
       
        GetClientRect(&rect);
        dc.DrawText(string, -1, &rect, DT_LEFT);
}

---

SetWindowText will not work as he wants. I've used it to set a windows title bar text. I haven't worked with MDI projects before, and a simple test didn't change the text.

Since you are using MFC try this instead :

Code:

---

CDC* dc;
CString msg = L"Hello World";

dc = GetDC();
dc->TextOut(0,0, msg);

---

You found an answer before I could get mine posted. :)

Remember though, if your window gets covered by another window and then you bring it back to the front, the text will be erased by the WM_PAINT message. If you want it to stay around you need to do your TextOut inside the wm_paint handler.