enumwnd.c File Reference

#include <windows.h>
#include <tchar.h>
#include <stdio.h>

Include dependency graph for enumwnd.c:

Go to the source code of this file.

Classes
struct	_EnumData

Typedefs
typedef struct _EnumData	EnumData

Functions
LRESULT WINAPI	MainWndProc (HWND, UINT, WPARAM, LPARAM)
int WINAPI	WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
void	MyTextOut (HDC hdc, int x, int y, const TCHAR *text)
BOOL CALLBACK	MyWindowEnumProc (HWND hwnd, LPARAM lParam)

Variables
HBRUSH	hbrBackground
HFONT	tf
int	test = 0
const TCHAR *	APP_NAME = "EnumWnd Test"
const TCHAR *	CLASS_NAME = "EnumWndTestClass"

Typedef Documentation

EnumData

typedef struct _EnumData EnumData

Function Documentation

MainWndProc()

LRESULT WINAPI MainWndProc	(	HWND	hWnd,
		UINT	msg,
		WPARAM	wParam,
		LPARAM	lParam
	)

Definition at line 109 of file enumwnd.c.

{
  PAINTSTRUCT ps;
  HDC hDC;
  RECT rect;
  TCHAR buf[100];
  EnumData ed;
 
  switch(msg)
  {
  case WM_PAINT:
    hDC = BeginPaint(hWnd, &ps);
    SelectObject(hDC, tf);
 
    GetClientRect ( hWnd, &rect );
    FillRect ( hDC, &rect, hbrBackground );
 
    MyTextOut ( hDC, 10, 10, "EnumWnd Test" );
 
    _sntprintf ( buf, sizeof(buf)/sizeof(*buf), _T("My HWND: %x"), hWnd );
    MyTextOut ( hDC, 10, 30, buf );
 
    ed.hdc = hDC;
    ed.x = 10;
    ed.y = 70;
 
    switch ( test )
    {
    case 1:
      MyTextOut ( hDC, 10, 50, _T("Test #1: EnumWindows()") );
      EnumWindows ( MyWindowEnumProc, (LPARAM)&ed );
      break;
    case 2:
      MyTextOut ( hDC, 10, 50, _T("Test #2: EnumChildWindows()") );
      EnumChildWindows ( hWnd, MyWindowEnumProc, (LPARAM)&ed );
      break;
    case 3:
      MyTextOut ( hDC, 10, 50, _T("Test #3: EnumDesktopWindows") );
      EnumDesktopWindows ( NULL, MyWindowEnumProc, (LPARAM)&ed );
      break;
    case 4:
      MyTextOut ( hDC, 10, 50, _T("Test #4: EnumThreadWindows") );
      EnumThreadWindows ( GetCurrentThreadId(), MyWindowEnumProc, (LPARAM)&ed );
      break;
    default:
      MyTextOut ( hDC, 10, 50, _T("Press any of the number keys from 1 to 4 to run a test") );
      MyTextOut ( hDC, 10, 70, _T("Press the left and right mouse buttons to cycle through the tests") );
      break;
    }
 
    EndPaint(hWnd, &ps);
    break;
 
  case WM_CHAR:
    test = (TCHAR)wParam - '1' + 1;
    RedrawWindow ( hWnd, NULL, NULL, RDW_INVALIDATE );
    break;
 
  case WM_LBUTTONDOWN:
    if ( ++test > 4 )
      test = 1;
    RedrawWindow ( hWnd, NULL, NULL, RDW_INVALIDATE );
    break;
 
  case WM_RBUTTONDOWN:
    if ( !--test )
      test = 4;
    RedrawWindow ( hWnd, NULL, NULL, RDW_INVALIDATE );
    break;
 
  case WM_DESTROY:
    PostQuitMessage(0);
    break;
 
  default:
    return DefWindowProc(hWnd, msg, wParam, lParam);
  }
  return 0;
}

Referenced by WinMain().

MyTextOut()

void MyTextOut	(	HDC	hdc,
		int	x,
		int	y,
		const TCHAR *	text
	)

Definition at line 86 of file enumwnd.c.

{
  TextOut ( hdc, x, y, text, _tcslen(text) );
}

Referenced by MainWndProc(), and MyWindowEnumProc().

MyWindowEnumProc()

BOOL CALLBACK MyWindowEnumProc	(	HWND	hwnd,
		LPARAM	lParam
	)

Definition at line 98 of file enumwnd.c.

{
  TCHAR wndcaption[1024], buf[1024];
  EnumData* ped = (EnumData*)lParam;
  GetWindowText ( hwnd, wndcaption, sizeof(wndcaption)/sizeof(*wndcaption) );
  _sntprintf ( buf, sizeof(buf)/sizeof(*buf), _T("%x - %s"), hwnd, wndcaption );
  MyTextOut ( ped->hdc, ped->x, ped->y, buf );
  ped->y += 13;
  return TRUE;
}

Referenced by MainWndProc().

WinMain()

int WINAPI WinMain	(	HINSTANCE	hInstance,
		HINSTANCE	hPrevInstance,
		LPSTR	lpszCmdLine,
		int	nCmdShow
	)

Definition at line 21 of file enumwnd.c.

{
  WNDCLASS wc;
  MSG msg;
  HWND hWnd;
 
  wc.lpszClassName = CLASS_NAME;
  wc.lpfnWndProc = MainWndProc;
  wc.style = CS_VREDRAW | CS_HREDRAW;
  wc.hInstance = hInstance;
  wc.hIcon = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
  wc.hCursor = LoadCursor(NULL, (LPCTSTR)IDC_ARROW);
  wc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH);
  wc.lpszMenuName = NULL;
  wc.cbClsExtra = 0;
  wc.cbWndExtra = 0;
  if (RegisterClass(&wc) == 0)
    {
      _ftprintf ( stderr, _T("RegisterClass failed (last error 0x%lX)\n"),
          GetLastError());
      return(1);
    }
 
  hWnd = CreateWindow(CLASS_NAME,
              APP_NAME,
              WS_OVERLAPPEDWINDOW,
              0,
              0,
              CW_USEDEFAULT,
              CW_USEDEFAULT,
              NULL,
              NULL,
              hInstance,
              NULL);
  if (hWnd == NULL)
    {
      _ftprintf ( stderr, _T("CreateWindow failed (last error 0x%lX)\n"),
          GetLastError());
      return(1);
    }
 
  tf = CreateFont (14, 0, 0, TA_BASELINE, FW_NORMAL, FALSE, FALSE, FALSE,
            ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
            DEFAULT_QUALITY, FIXED_PITCH|FF_DONTCARE, _T("Timmons"));
 
  hbrBackground = CreateSolidBrush ( RGB(192,192,192) );
 
  ShowWindow ( hWnd, nCmdShow );
 
  while(GetMessage(&msg, NULL, 0, 0))
  {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }
 
  DeleteObject(hbrBackground);
 
  DeleteObject(tf);
 
  return msg.wParam;
}

Variable Documentation

APP_NAME

const TCHAR* APP_NAME = "EnumWnd Test"

Definition at line 15 of file enumwnd.c.

Referenced by WinMain().

CLASS_NAME

const TCHAR* CLASS_NAME = "EnumWndTestClass"

Definition at line 16 of file enumwnd.c.

Referenced by ClassAddDevice(), ClassCallback(), ClassCancelRoutine(), ClassCleanup(), ClassClose(), ClassCreate(), ClassDeviceControl(), ClassRead(), ClassStartIo(), ConnectPortDriver(), CreateClassDeviceObject(), DestroyPortDriver(), DriverEntry(), HandleReadIrp(), ReadRegistryEntries(), SearchForLegacyDrivers(), and WinMain().

hbrBackground

HBRUSH hbrBackground

Definition at line 12 of file enumwnd.c.

Referenced by MainWndProc(), CTrayShowDesktopButton::OnDraw(), ProcessListWndProc(), test_pack_WNDCLASSA(), test_pack_WNDCLASSEXA(), test_pack_WNDCLASSEXW(), test_pack_WNDCLASSW(), and WinMain().

test

int test = 0

Definition at line 14 of file enumwnd.c.

Referenced by MainWndProc().

tf

HFONT tf

Definition at line 13 of file enumwnd.c.

Referenced by MainWndProc(), and WinMain().