Windows API: Edit Box Help

Im trying to get two edit boxes on the screen but they are not showing up. Can anyone tell me what Im doing wrong?

Code:

---

#define WIN32_LEAN_AND_MEAN

#include <windows.h>
#include <windowsx.h>
#include <mmsystem.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

///////////////////////////////////////////////////////////////////////
// Globals
//////////////////////////
// This section will define globals
///////////////////////////////////////////////////////////////////////
HWND main_hwnd = NULL;
HINSTANCE main_instance = NULL;

///////////////////////////////////////////////////////////////////////
// Events Handler
//////////////////////////
// This section will handle windows events
///////////////////////////////////////////////////////////////////////
LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
PAINTSTRUCT ps;
HDC hdc;
switch(msg){
case WM_CREATE:
        {
                HDC hdc = GetDC(hwnd);
                COLORREF TextColor = RGB(0,175,0);
                SetTextColor(hdc,TextColor);
                SetBkMode(hdc,TRANSPARENT);
                return(0);
        }break;
case WM_PAINT:
        {
                hdc = BeginPaint(hwnd,&ps);
                TextOut(hdc,55,40,"Username:",strlen("Username:"));
                TextOut(hdc,55,80,"Password:",strlen("Password:"));
                EndPaint(hwnd,&ps);
                return(0);
        }break;
case WM_DESTROY:
        {
                PostQuitMessage(0);
                return(0);
        } break;
default:break;
}
return(DefWindowProc(hwnd,msg,wparam,lparam));
}

///////////////////////////////////////////////////////////////////////
// Window main
//////////////////////////
// This section is where the main program code goes.
///////////////////////////////////////////////////////////////////////

int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int ncmdshow)
{

///////////////////////////////////////////////////////////////////////
// Windows Class
//////////////////////////
// This section sets up the windows class structure.
// This section creates the application, and determines its
// properties.
///////////////////////////////////////////////////////////////////////
WNDCLASSEX winclass;
HWND hwnd;
MSG msg;
winclass.cbSize = sizeof(WNDCLASSEX);
winclass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS;
winclass.lpfnWndProc = WindowProc;
winclass.cbClsExtra = 0;
winclass.cbWndExtra = 0;
winclass.hInstance = hinstance;
winclass.hIcon = LoadIcon(hinstance,MAKEINTRESOURCE(100));
winclass.hCursor = LoadCursor(NULL,IDC_ARROW);
winclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
winclass.lpszMenuName = NULL;
winclass.lpszClassName = "WINCLASS1";
winclass.hIconSm = LoadIcon(NULL,IDI_WINLOGO);
if(!RegisterClassEx(&winclass))
return(0);

main_instance = hinstance;
main_hwnd = hwnd;

///////////////////////////////////////////////////////////////////////
// Create Window
//////////////////////////
// This section will create our window.
///////////////////////////////////////////////////////////////////////
if(!(main_hwnd = CreateWindowEx(NULL,"WINCLASS1","Lightning Round: Please Log In",
  WS_OVERLAPPEDWINDOW | WS_VISIBLE,100,75,400,300,NULL,NULL,
  hinstance, NULL)))
  return(0);

///////////////////////////////////////////////////////////////////////
// Create Edit Controls
//////////////////////////
// This section will create our edit controls
///////////////////////////////////////////////////////////////////////
        CreateWindowEx(NULL,"WINCLASS1","Username:",ES_LEFT | WS_VISIBLE | WS_CHILD,
                60,40,CW_USEDEFAULT,CW_USEDEFAULT,main_hwnd,NULL,main_instance,NULL);
        CreateWindowEx(NULL,"WINCLASS1","Password:",ES_LEFT | WS_VISIBLE | WS_CHILD,
                60,80,CW_USEDEFAULT,CW_USEDEFAULT,main_hwnd,NULL,main_instance,NULL);

///////////////////////////////////////////////////////////////////////
// Main Event Loop
//////////////////////////
// This section will be where the main program code goes
///////////////////////////////////////////////////////////////////////
while(TRUE)
{
        if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))
        {
                if(msg.message == WM_QUIT){
                        break;
                }
                TranslateMessage(&msg);
                DispatchMessage(&msg);
        }
}
return(msg.wParam);
}

---

Don't be afraid to put tab your code, use lots of whitespace, break it into multiple files, etc. Other than that, I saw the problem was that your width and height specifications for your edit box were CW_USEDEFAULT, and the computer has no idea what the default width and height in that case would be, so I modified your code to look something like this:

Code:

---

        CreateWindowEx(NULL,"Edit","",ES_LEFT | WS_VISIBLE | WS_CHILD,
                140,40,100,20,main_hwnd,NULL,main_hinstance,NULL);
        CreateWindowEx(NULL,"Edit","",ES_LEFT | WS_VISIBLE | WS_CHILD,
                140,80,100,20,main_hwnd,NULL,main_hinstance,NULL);

---

Also not knowing what WINCLASS1 was, I changed it to an Edit class. MSDN explains that their are predefined system classes such as the "edit" box class so that your CreateWindow[Ex] will be properly made a user editable window. Also, if you were ever going to GetDlgItemText, or whatever, from your edit boxes, you would give your Edit boxes something more like:

Code:

---

//----In some header---//
#define ID_PASSBOX 1001
#define ID_USERBOX 1002
//---End header---//

...

        CreateWindowEx(NULL,"WINCLASS1","",ES_LEFT | WS_VISIBLE | WS_CHILD,
                140,40,100,20,hwnd,(HMENU)ID_USERBOX,hinstance,NULL);
        CreateWindowEx(NULL,"WINCLASS1","",ES_LEFT | WS_VISIBLE | WS_CHILD,
                140,80,100,20,hwnd,(HMENU)ID_PASSBOX,hinstance,NULL);

...

//---Later in WinProc---//
char szBuffer[128];
GetDlgItemText(hwnd, ID_USERBOX, szBuffer, 128);

---

The hMenu parameter of CreateWindowEx doubles as an ID for your child window controls, it's pretty nifty ;)

I got it to work with slightly different code, but the major changes you listed were made :-) thanks for the help.