在VC中如何是应用程序窗口自动隐藏!!!

最简单的是使用FindWindow,跟据窗口类类名或窗口标题名联系。不过也可使用其它通信手段，如命名事件，共享内存等。
enum {
ALIGN_NONE,
ALIGN_TOP,
ALIGN_LEFT,
ALIGN_RIGHT
};void C***Dlg::hideWindow(BOOL hide)
{
CRect rc;
GetWindowRect(rc);
int moves = 20;
int xStep, yStep;
int xEnd, yEnd;
int cxScreen; switch (alignType) {
case ALIGN_TOP:
xStep = 0;
xEnd = rc.left;
if (hide) {
yStep = -rc.bottom / moves;
yEnd = -rc.Height() + 2;
} else {
yStep = -rc.top / moves;
yEnd = 0;
}
break;
case ALIGN_LEFT:
yStep = 0;
yEnd = rc.top;
if (hide) {
xStep = -rc.right / moves;
xEnd = -rc.Width() + 2;
} else {
xStep = -rc.left / moves;
xEnd = 0;
}
break;
case ALIGN_RIGHT:
yStep = 0;
yEnd = rc.top;
cxScreen = GetSystemMetrics(SM_CXSCREEN);
if (hide) {
xStep = (cxScreen - rc.left) / moves;
xEnd = cxScreen - 2;
} else {
xStep = (cxScreen - rc.right) / moves;
xEnd = cxScreen - rc.Width();
}
break;
}/* for (int i = 0; i < moves; i++) {
rc.left += xStep;
rc.top += yStep;
SetWindowPos(NULL, rc.left, rc.top, 0, 0, SWP_NOSIZE | SWP_NOSENDCHANGING);
RedrawWindow(NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ERASE | RDW_ALLCHILDREN);
Sleep(20);
}*/
SetWindowPos(NULL, xEnd, yEnd, 0, 0, SWP_NOSIZE); isHide = hide;
if (!isHide)
SetTimer(IDT_HOVER, 50, NULL);
}UINT C***Dlg::OnNcHitTest(CPoint point)
{
UINT res = CDialog::OnNcHitTest(point);
if (res == HTCLIENT)
return HTCAPTION;// TRACE("OnNcHitTest point=%d  %d. res=%d ,alignType=%d\n",point.x,point.y ,res,alignType);
switch (alignType) {
case ALIGN_TOP:
if (res == HTLEFT || res == HTRIGHT || res == HTTOP ||
res == HTTOPLEFT || res == HTTOPRIGHT)
// res = HTERROR;
// else if (res == HTBOTTOMLEFT || res == HTBOTTOMRIGHT)
res = HTBOTTOM;
// if (isHide && res == HTBOTTOM)
hideWindow(FALSE);
break;
case ALIGN_LEFT:
if (res == HTTOP || res == HTBOTTOM || res == HTLEFT ||
res == HTTOPLEFT || res == HTBOTTOMLEFT)
// res = HTERROR;
// else if (res == HTTOPRIGHT || res == HTBOTTOMRIGHT)
res = HTRIGHT;
if (isHide && res == HTRIGHT)
hideWindow(FALSE);
break;
case ALIGN_RIGHT:
if (res == HTTOP || res == HTBOTTOM || res == HTRIGHT ||
res == HTTOPRIGHT || res == HTBOTTOMRIGHT)
// res = HTERROR;
// else if (res == HTTOPLEFT || res == HTBOTTOMLEFT)
res = HTLEFT;
if (isHide && res == HTLEFT)
hideWindow(FALSE);
break;
}
return res;
}void C***Dlg::OnTimer(UINT nIDEvent)
{
if (nIDEvent == IDT_HOVER) {
CPoint pt;
GetCursorPos(&pt);
CRect rc;
GetWindowRect(rc);
rc.InflateRect(10, 10);
if (!rc.PtInRect(pt)) {
KillTimer(nIDEvent);
hideWindow();
}
}
****
}void C***Dlg::OnMoving(UINT fwSide, LPRECT pRect)
{
CRect rcOld, rcWorkArea;
CPoint pt;
GetWindowRect(rcOld);
SystemParametersInfo(SPI_GETWORKAREA, 0, rcWorkArea, 0);
GetCursorPos(&pt);
int cxScreen = GetSystemMetrics(SM_CXSCREEN); if (alignType == ALIGN_NONE) {
if (pt.y - rcWorkArea.top < 20) {
alignType = ALIGN_TOP;
pRect->top = 0;
}
else if (pt.x - rcWorkArea.left < 20) {
alignType = ALIGN_LEFT;
pRect->left = 0;
winNormalSize = rcOld.Size();
}
else if (rcWorkArea.right - pt.x < 20) {
alignType = ALIGN_RIGHT;
pRect->right = cxScreen;
winNormalSize = rcOld.Size();
}
if (alignType != ALIGN_NONE)
SetTimer(IDT_HOVER, 50, NULL);
} if (alignType == ALIGN_TOP) {
if (pRect->top > 0)
alignType = ALIGN_NONE;
else {
pRect->top = 0;
pRect->bottom = rcOld.Height();
}
}
else if (alignType == ALIGN_LEFT) {
if (pRect->left > 0) {
pRect->right = pRect->left + winNormalSize.cx;
pRect->bottom = pRect->top + winNormalSize.cy;
alignType = ALIGN_NONE;
} else {
pRect->left = 0;
pRect->right = rcOld.Width();
pRect->top = 0;
pRect->bottom = rcWorkArea.bottom;
}
}
else if (alignType == ALIGN_RIGHT) {
if (pRect->right < cxScreen) {
pRect->left = pRect->right - winNormalSize.cx;
pRect->bottom = pRect->top + winNormalSize.cy;
alignType = ALIGN_NONE;
} else {
pRect->right = cxScreen;
pRect->left = pRect->right - rcOld.Width();
pRect->top = 0;
pRect->bottom = rcWorkArea.bottom;
}
} if (alignType == ALIGN_NONE)
KillTimer(IDT_HOVER); CDialog::OnMoving(fwSide, pRect);

}最开始，alignType = ALIGN_NONE
本代码的流程如下：
1. 初始化窗体时设置窗体位置，并设置依靠状态窗体状态。
2. 当接收到WM_MOUSEMOVE消息时，检查窗体是否显示，若否，显示，并打开定时器。
3. 在WM_MOVING中检测窗体位置，并自动靠拢边界。
4. 在定时器中检测鼠标，当鼠标离开窗体后，关闭定时器，隐藏窗体。
当然，在隐藏窗体时首先判断位置，若停靠在边缘，则隐藏，否则，不隐藏。
现在我们一步步看代码。
int             alignType;   //全局变量，用于记录窗体停靠状态
enum
{
ALIGN_NONE,          //不停靠
ALIGN_TOP,          //停靠上边
ALIGN_LEFT,          //停靠左边
ALIGN_RIGHT          //停靠右边
};
#define NEAR_SIZE 20 //定义自动停靠有效距离
#define NEAR_SIDE 2 //窗体隐藏后在屏幕上保留的像素，以使鼠标可以触及
/*
下面代码处理窗体消息WM_MOVING，pRect是由参数lParam传来的指针
*/
void            OnMoving(HWND hWnd, LPRECT pRect)
{
//未靠边界由pRect测试
if (alignType == ALIGN_NONE)
{
  if (pRect->top < NEAR_SIZE) //在上边有效距离内，自动靠拢。
  {
   alignType = ALIGN_TOP;
   pRect->bottom -= pRect->top;
   pRect->top = 0;
  }
  if (pRect->left < NEAR_SIZE) //在左边有效距离内
  {
   alignType = ALIGN_LEFT;
   pRect->right -= pRect->left;
   pRect->left = 0;
  }
  else if (pRect->right + NEAR_SIZE > ScreenX) //在右边有效距离内，ScreenX为屏幕宽度，可由GetSystemMetrics(SM_CYSCREEN)得到。
  {
   alignType = ALIGN_RIGHT;
   pRect->left += (ScreenX - pRect->right);
   pRect->right = ScreenX;
  }}
else
{
  //靠边界由鼠标测试
  POINT           pt;
  GetCursorPos(&pt);
  if (alignType == ALIGN_TOP)
  {
   if (pt.y > NEAR_SIZE) //由于我们移动窗体时，鼠标在标题栏内，当鼠标位置超过有效距离后，我们可以考虑用户要向下拖动鼠标。我们便解除上部停靠。
   {
    alignType = ALIGN_NONE;
    pRect->bottom += NEAR_SIZE;
    pRect->top = NEAR_SIZE;
   }
   else
   {
    pRect->bottom -= pRect->top;
    pRect->top = 0;
    if (pRect->left < NEAR_SIZE) //在上部停靠时，我们也考虑左右边角。
    {
     pRect->right -= pRect->left;
     pRect->left = 0;
    }
    else if (pRect->right + NEAR_SIZE > ScreenX)
    {
     pRect->left += (ScreenX - pRect->right);
     pRect->right = ScreenX;
    }
   }  }
  if (alignType == ALIGN_LEFT)
  {
   if (pt.x - pRect->right > 0) //鼠标可以在整个标题条来回移动，所以我们不能简单用左边界和鼠标的距离来解除停靠，这里我们在鼠标离开右边界时解除停靠。
   {
    alignType = ALIGN_NONE;
    pRect->right += NEAR_SIZE;
    pRect->left = NEAR_SIZE;
   }
   else
   {
    pRect->right -= pRect->left;
    pRect->left = 0;
    if (pRect->top < NEAR_SIZE) //考虑左上角。
    {
     pRect->bottom -= pRect->top;
     pRect->top = 0;
    }
   }
  }
  else if (alignType == ALIGN_RIGHT)
  {
   if (pt.x < pRect->left) //当鼠标离开左边界时，解除停靠。
   {
    alignType = ALIGN_NONE;
    pRect->left -= NEAR_SIZE;
    pRect->right -= NEAR_SIZE;
   }
   else
   {
    pRect->left += (ScreenX - pRect->right);
    pRect->right = ScreenX;
    if (pRect->top < NEAR_SIZE) //考虑右上角。
    {
     pRect->bottom -= pRect->top;
     pRect->top = 0;
    }
   }
  }
}
}
/*
在窗体初始化是设定窗体状态，如果可以停靠，便停靠在边缘
我本想寻求其他方法来解决初始化，而不是为它专一寻求一个函数，可是，窗体初始化时不发送WM_MOVING消息,我不得不重复类似任务.
*/
void            NearSide(HWND hWnd)
{
int             change = 0;
RECT            rect;
GetWindowRect(hWnd, &rect);
alignType = ALIGN_NONE;
if (rect.left < NEAR_SIZE)
{
  alignType = ALIGN_LEFT;
  if ((rect.left != 0) && rect.right != NEAR_SIDE)
  {
   rect.right -= rect.left;
   rect.left = 0;
   change = 1;
  }
}
else if (rect.right > ScreenX - NEAR_SIZE)
{
  alignType = ALIGN_RIGHT;
  if (rect.right != ScreenX && rect.left != ScreenX - NEAR_SIDE)
  {
   rect.left += (ScreenX - rect.right);
   rect.right = ScreenX;
   change = 1;
  }
}
//调整上
else if (rect.top < NEAR_SIZE)
{
  alignType = ALIGN_TOP;
  if (rect.top != 0 && rect.bottom != NEAR_SIDE)
  {
   rect.bottom -= rect.top;
   rect.top = 0;
   change = 1;
  }
}
if (change)
{
  MoveWindow(hWnd, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, TRUE);
}}
/*
窗体的显示隐藏由该函数完成,参数hide决定显示还是隐藏.
*/
void            HideSide(HWND hWnd, BOOL hide)
{
RECT            rc;
int             moves = 20;  //动画滚动窗体的步数,如果你觉得不够平滑,可以增大该值.
int             xStep, yStep;
int             xEnd, yEnd;
int             width;
int             height;
register int    i;
GetWindowRect(hWnd, &rc);
width = rc.right - rc.left;
height = rc.bottom - rc.top;//下边判断窗体该如何移动,由停靠方式决定
switch (alignType)
{
case ALIGN_TOP:
  {
   //向上移藏
   xStep = 0;
   xEnd = rc.left;
   if (hide)
   {
    yStep = -rc.bottom / moves;
    yEnd = -height + NEAR_SIDE;
   }
   else
   {
    yStep = -rc.top / moves;
    yEnd = 0;
   }
   break;
  }
case ALIGN_LEFT:
  {
   //向左移藏
   yStep = 0;
   yEnd = rc.top;
   if (hide)
   {
    xStep = -rc.right / moves;
    xEnd = -width + NEAR_SIDE;
   }
   else
   {
    xStep = -rc.left / moves;
    xEnd = 0;
   }
   break;
  }
case ALIGN_RIGHT:
  {
   //向右移藏
   yStep = 0;
   yEnd = rc.top;
   if (hide)
   {
    xStep = (ScreenX - rc.left) / moves;
    xEnd = ScreenX - NEAR_SIDE;
   }
   else
   {
    xStep = (ScreenX - rc.right) / moves;
    xEnd = ScreenX - width;
   }
   break;
  }
default:
  return;
}
//动画滚动窗体.
for (i = 0; i < moves; i++)
{
  rc.left += xStep;
  rc.top += yStep;
  SetWindowPos(hWnd, NULL, rc.left, rc.top, 0, 0, SWP_NOSIZE | SWP_NOSENDCHANGING);
  RedrawWindow(hWnd, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
  Sleep(5);
}
SetWindowPos(hWnd, NULL, xEnd, yEnd, 0, 0, SWP_NOSIZE);
if (!hide) //如果窗体已被显示,设置定时器.监视鼠标.
{
  SetTimer(hWnd, WM_TIMER, 500, NULL);
}
}
//下面就是通过窗体回调函数将这些函数组织起来.
//这里仅列出使用的消息
case WM_TIMER: //定时器消息
{
POINT           pt;
RECT            rc;
GetCursorPos(&pt);
GetWindowRect(hWnd, &rc);
if (!PtInRect(&rc, pt)) //若鼠标不在窗体内,隐藏窗体.
{
  KillTimer(hWnd, WM_TIMER);
  HideSide(hWnd, TRUE);
}
break;
}
case WM_CREATE:
case WM_INITDIALOG: //初始化消息
{
SetWindowPos(...) //程序保存窗体上次靠位置,在这里恢复.
   NearSide(hWnd);
break;
}
//这两个消息是在窗体移动开始时和结束时产生的,我们在窗体开始移动时关闭定时器,移动结束后再打开,这样避免窗体移动时隐藏,金山快译的浮动条就有这种情况出现.
case WM_ENTERSIZEMOVE:
{
KillTimer(hWnd, WM_TIMER);
break;
}
case WM_EXITSIZEMOVE:
{
SetTimer(hWnd, WM_TIMER, 500, NULL);
break;
}
case WM_MOUSEMOVE: //受到窗体移动消息时,判断窗体是否显示,
{
RECT            rc;
GetWindowRect(hWnd, &rc);
if (rc.left < 0 || rc.top < 0 || rc.right > ScreenX) //未显示
  HideSide(hWnd, FALSE);
break;
}
case WM_MOVING: //处理窗体移动时消息,实现自动停靠
{
OnMoving(hWnd, (LPRECT) lParam);
break;
}
case WM_MOVE:
{
//保存窗体位置
}

调试易

在VC中如何是应用程序窗口自动隐藏!!!

解决方案 »