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// MoveCaret2.cpp : Defines the entry point for the application.
//
#include "stdafx.h"
#include "MoveCaret2.h"
#define MAX_LOADSTRING 100
// Global Variables:
HINSTANCE hInst; // current instance
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name
// Forward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;
// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_MOVECARET2, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_MOVECARET2));
// Main message loop:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int) msg.wParam;
}
//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
// COMMENTS:
//
// This function and its usage are only necessary if you want this code
// to be compatible with Win32 systems prior to the 'RegisterClassEx'
// function that was added to Windows 95. It is important to call this function
// so that the application will get 'well formed' small icons associated
// with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_MOVECARET2));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;//MAKEINTRESOURCE(IDC_MOVECARET2);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassEx(&wcex);
}
//
// FUNCTION: InitInstance(HINSTANCE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance; // Store instance handle in our global variable
hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, 180, 100, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
//
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// WM_PAINT - Paint the main window
// WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
static HWND hwndEdit;
static int editId;
static bool gaurd = false;
switch (message)
{
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
if(gaurd)
break;
switch(wmEvent)
{
// TEXT CHANGE NOTIFICATION
case EN_CHANGE:
// Get the text
TCHAR buff[64];
SendMessage(hwndEdit, WM_GETTEXT, 32, (LPARAM)buff);
size_t len = _tcslen(buff);
// see if the last char is an "h"
if(len > 0 && buff[len - 1] == 'h')
{
// if we have enough room in our buffer, add an "a"
if ( len <= 62)
{
_tcsncat(buff, L"a", 1);
// save the initial position of the position
DWORD firstChar, lastChar;
SendMessage(hwndEdit, EM_GETSEL, (WPARAM) &firstChar, (LPARAM) &lastChar);
// now set the text, using guard as a mutex to prevent recursing into this handler
gaurd = true;
SendMessage(hwndEdit, WM_SETTEXT, NULL, (LPARAM) buff);
gaurd = false;
//reset their caret position
if(firstChar == lastChar && firstChar == len)
{
firstChar++;
lastChar++;
}
SendMessage(hwndEdit, EM_SETSEL, (WPARAM) firstChar, (LPARAM) lastChar);
}
}
}
break;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_CREATE:
// create a text box with the usual border
hwndEdit = CreateWindowEx(
WS_EX_OVERLAPPEDWINDOW, // this makes the textbox receive a border
L"Edit", // predefined class
NULL, // no window title
WS_CHILD | WS_VISIBLE | ES_LEFT | WS_BORDER,
20, 20, 120, 20, // set size in WM_SIZE message
hWnd, // parent window
NULL,
(HINSTANCE) GetWindowLong(hWnd, GWL_HINSTANCE),
NULL);
editId = GetWindowLong(hwndEdit, GWL_ID);
// focus the text box
SetFocus(hwndEdit);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}