mou_win32---.c

来自「使用miniGUI模拟器的简单开发例子(值得参考)」· C语言 代码 · 共 133 行

//-----------------------
//mou_win32.c

/*
* Copyright (c) 2005, Wilson Loi [e-mail]
* WIN32 screen driver for Microwindows
*/
#include <stdio.h>
//#include "device.h"
#include "common.h"
#include "ial.h"
#include "gal.h"
#include "Native.h"

//#include <windows.h>
//#include <windowsx.h>
//extern HWND rootWindow;
#define SCALE  3 /* default scaling factor for acceleration */
#define THRESH  5 /* default threshhold for acceleration */

static int   Mou_Open(MOUSEDEVICE *pmd);
static void  Mou_Close(void);
static int   Mou_GetButtonInfo(void);
static void Mou_GetDefaultAccel(int *pscale,int *pthresh);
static int   Mou_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz, int *bp);
static int   Mou_Poll(void);

MOUSEDEVICE mousedev = {
	Mou_Open,
	Mou_Close,
	Mou_GetButtonInfo,
	Mou_GetDefaultAccel,
	Mou_Read,
	Mou_Poll,
	MOUSE_NORMAL /* flags*/
};

/*
* Poll for events
*/

static int
Mou_Poll(void)
{
	return 1;
}

/*
* Open up the mouse device.
*/
static int
Mou_Open(MOUSEDEVICE *pmd)
{
//	return -2; /* no mouse*/
	return 1; 
}

/*
* Close the mouse device.
*/
static void
Mou_Close(void)
{
}

/*
* Get mouse buttons supported
*/
static int
Mou_GetButtonInfo(void)
{
	return MWBUTTON_L | MWBUTTON_M | MWBUTTON_R;
}

/*
* Get default mouse acceleration settings
*/
static void
Mou_GetDefaultAccel(int *pscale,int *pthresh)
{
	*pscale = SCALE;
	*pthresh = THRESH;
}

/*
* Attempt to read bytes from the mouse and interpret them.
* Returns -1 on error, 0 if either no bytes were read or not enough
* was read for a complete state, or 1 if the new state was read.
* When a new state is read, the current buttons and x and y deltas
* are returned.  This routine does not block.
*/

typedef struct _tagMSG {     // msg  
    HWND   hwnd;      
    UINT   message;
    WPARAM wParam;
    LPARAM lParam;
    DWORD  time;
    POINT  pt;
} MSG_W;

extern MSG_W *winMsg;

///houhh 20061119...
#define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
#define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
//////

static int
Mou_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz, int *bp)
{
    if (winMsg)
    {
        *dx = GET_X_LPARAM(winMsg->lParam);
        *dy = GET_Y_LPARAM(winMsg->lParam);
        *dz = 0;
        *bp = 0;
        if (winMsg->wParam & 1)
        {
            *bp |= MWBUTTON_L;
        }
        if (winMsg->wParam & 16)
        {
            *bp |= MWBUTTON_M;
        }
        if (winMsg->wParam & 2)
        {
            *bp |= MWBUTTON_R;
        }
        return 2;
    }
    return 0;
}