How to make a textbox?

I cannot create a multiline textbox on a parent window. I used the following code but it does not show any edit box on my window:

Code:

---


#include <windows.h>
#include "resource.h"
#define classname "myclass"
HWND winhwnd;
HWND EditBoxHwnd;
HINSTANCE hinst;
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
        switch(msg)
        {
        case WM_CREATE:
        EditBoxHwnd = CreateWindow("EDIT",
                                "df",
                                            WS_CHILD | WS_VISIBLE
                                      |  ES_MULTILINE | ES_WANTRETURN |
                                            WS_VSCROLL,
                        CW_USEDEFAULT,
                        CW_USEDEFAULT,
                        CW_USEDEFAULT,
                        CW_USEDEFAULT,
                                      hwnd,
                                NULL,
                                hinst,
                                NULL);
                return 0;
        case WM_DESTROY:
            PostQuitMessage(0);
          return 0;
        }
        return DefWindowProc(hwnd, msg, wparam, lparam);
}

int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpCmdLine, int nShowCmd)
{
        HMENU hmenu;
        WNDCLASSEX wc;
        MSG message;
        // Fills in the class structure
        wc.cbClsExtra = 0;
        wc.cbSize = sizeof(WNDCLASSEX);
        wc.cbWndExtra = 0;
        wc.hbrBackground = (HBRUSH) GetStockObject(LTGRAY_BRUSH);
        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
        wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
        wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
        wc.hInstance = hinst;
        wc.lpfnWndProc = WndProc;
        wc.lpszClassName = classname;
        wc.style = CS_HREDRAW | CS_VREDRAW;
        wc.lpszMenuName = NULL;

        //Registers the Class

        if(!RegisterClassEx(&wc))
                {
                MessageBox(NULL, "Class failure","CLASS", MB_OK);
                return 0;
        }
        //Create thw hwnd of our main window

        winhwnd = CreateWindow(
                classname,
                "Welcome to my Dialog Program",
                WS_OVERLAPPEDWINDOW,
                CW_USEDEFAULT,
                CW_USEDEFAULT,
                CW_USEDEFAULT,
                CW_USEDEFAULT,
                NULL,
                NULL,
                hinstance,
                NULL);
       
       
        if(winhwnd == NULL)
        {
                MessageBox(NULL, "Hwnd failure","HWND", MB_OK);
                return 0;
        }
        ShowWindow(winhwnd, nShowCmd);
        UpdateWindow(winhwnd);

        //Messes up with the messages

        while(GetMessage(&message, NULL,0,0))
                {
                TranslateMessage(&message);
                DispatchMessage(&message);
                }

        return message.wParam;
}

---

Do you know why it does not show the edit box on my window?

Change all the:
CW_USEDEFAULT,
to real values like 10,10,100,100

I still does not show the edit box.

Thats really strange your code works perfectly for me.

Try adding

ShowWindow(EditBoxHwnd,SW_NORMAL);
UpdateWindow(winhwnd);

after your CreateWindow and before return 0;

It works now. I just change the "Hinstance" to default hinstance and it works now.

And also, I think that you suggestion(getting rid of CS_USEDEFAULT) was also right.