Simple Win32 Window

07 Dec 2009

I seem to always need this skeleton code to build a window but I can never seem to memorize the whole thing. I figured I would post it here to make it easier for me to find. The #programa comments are not cross platform and only work on Microsoft based compilers, so watch out.

/**
 * SimpleWindow v1.0
 * @file
 *
 * 09-24-2008: JPH - Created.
 *
 * @author Jacob Hammack
 */

#include <windows.h>

/**
 * Forces the compiler to link these libraries
 *
 */
#pragma comment(lib, "user32.lib")
#pragma comment(lib, "gdi32.lib")
#pragma comment(lib, "kernel32.lib")

/**
 * WindowsMessageLoop processes
 *
 * @author Jacob Hammack
 */
LRESULT CALLBACK WindowsMessageLoop(HWND WindowHandle, UINT Message, WPARAM WindowParameters, LPARAM MoreWindowsParameters)
{
    switch(Message)
    {
        case WM_CREATE:
            return 0;

        case WM_PAINT:
            return 0;

        case WM_SIZE:
            return 0;

        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    }

    return DefWindowProc(WindowHandle, Message, WindowParameters, MoreWindowsParameters);
}

/**
 * WinMain is the main() equivilent for a windows program, execution starts here.
 *
 * @author Jacob Hammack
 */
int WINAPI WinMain (HINSTANCE CurrentInstance, HINSTANCE PreviousInstance,  PSTR CommandLine, int CommandShow)
{
    static TCHAR ApplicationName[] = TEXT("SimpleWindow");
    HWND WindowHandle;
    MSG Message;
    WNDCLASS WindowsClass;

    WindowsClass.style = CS_HREDRAW | CS_VREDRAW;
    WindowsClass.lpfnWndProc = WindowsMessageLoop;
    WindowsClass.cbClsExtra = 0;
    WindowsClass.cbWndExtra = 0;
    WindowsClass.hInstance = CurrentInstance;
    WindowsClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    WindowsClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    WindowsClass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
    WindowsClass.lpszMenuName = NULL;
    WindowsClass.lpszClassName = ApplicationName;

    if(!RegisterClass(&WindowsClass))
    {
        MessageBox(NULL, TEXT("Unable to create a window."), ApplicationName, MB_ICONERROR);

        return 0;
    }

    WindowHandle = CreateWindow(ApplicationName,        /* Window Class Name*/
                                TEXT("Simple Window"),  /* Window Caption */
                                WS_OVERLAPPEDWINDOW,    /* Window Style*/
                                CW_USEDEFAULT,          /* Initial X position*/
                                CW_USEDEFAULT,          /* Initial Y position */
                                300,                    /* Initial Width of the window*/
                                100,                    /* Initial Height of the window */
                                NULL,                   /* Parent Window Handle */
                                NULL,                   /* Window Menu Handle */
                                CurrentInstance,        /* Instance of the Program Handle*/
                                NULL);                  /* Window Creation Parameters */

    ShowWindow(WindowHandle, CommandShow);
    UpdateWindow(WindowHandle);

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

    return Message.wParam;
}

CC=cl
CFLAGS= /nologo /MT /O2 /TC
LINKS=/link /OUT:simplewindow.exe /SUBSYSTEM:WINDOWS

all: simplewindow

simplewindow: simplewindow.c
    $(CC) $(CFLAGS) simplewindow.c $(LINKS)

clean:
    del *.exe; del *.obj

Simple Window

simplewindow.zip