reactos/rosapps/tests/carets/carets.c

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#include <windows.h>
#include <stdio.h>
#include "resource.h"
static int CaretWidth = 2;
static int CaretHeight = 16;
static int CharWidth = 10;
static int CharHeight = 16;
static HBITMAP CaretBitmap;
LRESULT WINAPI MainWndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI
WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpszCmdLine,
int nCmdShow)
{
WNDCLASS wc;
MSG msg;
HWND hWnd;
CaretBitmap = LoadBitmap(hInstance, (LPCTSTR)IDB_CARET);
wc.lpszClassName = "CaretTestClass";
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)COLOR_WINDOW;
wc.lpszMenuName = NULL;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
if (RegisterClass(&wc) == 0)
{
fprintf(stderr, "RegisterClass failed (last error 0x%lX)\n",
GetLastError());
return(1);
}
hWnd = CreateWindow(wc.lpszClassName,
"Caret Test",
WS_OVERLAPPEDWINDOW,
0,
0,
200,
250,
NULL,
NULL,
hInstance,
NULL);
if (hWnd == NULL)
{
fprintf(stderr, "CreateWindow failed (last error 0x%lX)\n",
GetLastError());
return(1);
}
ShowWindow(hWnd, nCmdShow);
while(GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
POINT pt;
switch(msg)
{
case WM_ACTIVATE:
switch(LOWORD(wParam))
{
case WA_ACTIVE:
case WA_CLICKACTIVE:
if(!ShowCaret(hWnd))
DbgPrint("ShowCaret(0x%x)\n", hWnd);
break;
case WA_INACTIVE:
if(!HideCaret(hWnd))
DbgPrint("HideCaret(0x%x)\n", hWnd);
break;
}
break;
case WM_KEYDOWN:
if(!GetCaretPos(&pt))
{
DbgPrint("GetCaretPos() failed!\n");
break;
}
switch(wParam)
{
case VK_LEFT:
pt.x -= CharWidth;
break;
case VK_UP:
pt.y -= CharHeight;
break;
case VK_RIGHT:
pt.x += CharWidth;
break;
case VK_DOWN:
pt.y += CharHeight;
break;
}
if(!SetCaretPos(pt.x, pt.y))
DbgPrint("SetCaretPos() failed!\n");
break;
case WM_RBUTTONDOWN:
if(!CreateCaret(hWnd, CaretBitmap, 0, 0))
DbgPrint("CreateCaret() for window 0x%x failed!\n", hWnd);
else
if(!ShowCaret(hWnd))
DbgPrint("ShowCaret(0x%x)\n", hWnd);
break;
case WM_LBUTTONDOWN:
if(!CreateCaret(hWnd, (HBITMAP)0, CaretWidth, CaretHeight))
DbgPrint("CreateCaret() for window 0x%x failed!\n", hWnd);
else
if(!ShowCaret(hWnd))
DbgPrint("ShowCaret(0x%x)\n", hWnd);
break;
case WM_CREATE:
if(!CreateCaret(hWnd, (HBITMAP)0, CaretWidth, CaretHeight))
DbgPrint("CreateCaret() for window 0x%x failed!\n", hWnd);
else
if(!SetCaretPos(1, 1))
DbgPrint("SetCaretPos(%i, %i) failed!\n", 1, 1);
break;
case WM_DESTROY:
if(!DestroyCaret())
DbgPrint("DestroyCaret() failed!\n");
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, msg, wParam, lParam);
}
return 0;
}