here is the code
\/*
#############################################################################
Ch1p2_NormalWindow.cpp: a program that creates a window that behaves
normally.
Includes message pump and DefWindowProc() stuff.
#############################################################################
*/
// Include Directives ///////////////////////////////////////////////////////
#include <windows.h>
/****************************************************************************
WindowProc: our windowproc function. Notice how we watch for and act on the
WM_CLOSE message.
****************************************************************************/
LRESULT CALLBACK WindowProc(
HWND hwnd, // handle to window
UINT uMsg, // message identifier
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
)
{
switch(uMsg) {
// we get the WM_CLOSE message when our close (X) box has been clicked.
// we need to respond to it to make sure our program stops when its window
// is closed.
case WM_CLOSE:
PostQuitMessage(0);
return(0);
}
// all the other messages, we don't care about, so we let DefWindowProc
// handle them.
return(DefWindowProc(hwnd, uMsg, wParam, lParam));
}
/****************************************************************************
InitWindow: creates a window class and a window.
****************************************************************************/
HWND InitWindow(HINSTANCE hinst, int nCmdShow)
{
HWND hwnd;
WNDCLASSEX wc;
// set up and register window class
memset(&wc, 0, sizeof(wc));
wc.cbSize = sizeof(wc);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = WindowProc; // change this to NULL and crash!
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hinst;
wc.hIcon = NULL;
wc.hIconSm = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = reinterpret_cast<HBRUSH>(COLOR_APPWORKSPACE); // this can be changed for different colors
wc.lpszMenuName = NULL;
wc.lpszClassName = "MyCoolWindow";
RegisterClassEx(&wc);
// create a window that's 200 pixels wide, 100 tall.
// NOTE: You can change the window's style slightly by adding or removing WS_ styles.
// see what happens when you take out WS_MINIMIZEBOX, WS_MAXIMIZEBOX, WS_SYSMENU, and/or
// WS_THICKFRAME.
//
// notice how the window changes?
//
// another fun one to play with is WS_EX_TOOLWINDOW, which goes in the 1st parameter, because
// it's an extended style.
// ||
// VV WS_EX_TOOLWINDOW goes here!
hwnd = CreateWindowEx(0, "MyCoolWindow", "My First Window",
WS_POPUP | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME,
50, 50, 200, 100, NULL, NULL, hinst, NULL);
if (!hwnd) {
::MessageBox(NULL, "CreateWindow failed!", "Ch1_NormalWindow", MB_ICONSTOP);
exit(-1);
}
ShowWindow(hwnd, nCmdShow);
return(hwnd);
}
/****************************************************************************
WinMain: program execution starts here.
****************************************************************************/
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
// create a window
HWND hwnd = InitWindow(hInstance, nCmdShow);
// message pump
while (1) {
MSG msg;
if (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
{
int result = GetMessage(&msg, NULL, 0, 0);
if (!result) return(msg.wParam);
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
// we'll never get here, but the compiler will complain if we don't
// have this line.
return 0;
}
