Visual C++设计超强仿QQ自动伸缩窗口

2007-09-17 11:08:30　来源:天极yesky　作者:郑圣君点击:

虽然还不能算是完美的模仿，但效果已经非常非常的接近了。也许有人会奇怪为什么要用Tool Window 风格，这是因为，这样在任务栏中不会显示窗口。

　　收缩模式和位置决定后，剩下的工作就由最后两个核心函数完成了：实现收缩的DoHide()，实现伸展的DoShow()。在这两个过程中m_hsFinished，m_hiding 这两个变量起到很重要的控制作用。由于伸缩过程没完成时，hsFinished始终为FALSE，所以Timer 2 不会关闭，于是在OnTimer中会重复调用这两个函数之一，在这两个函数体内，窗口位置有规律地递减或递增就可以达到QQ的“抽屉”效果了，有趣的是即使伸缩过程还没完成，你也可以在这个过程中改变m_hiding这个值来决定他是伸还是缩，正如QQ一样。你可以把Timer 2 的事件间隔调大一点，然后在窗口伸缩时，鼠标来回地进出窗口就会很容易看到这样有趣的效果（还没缩进去又被拉了出来，或者还没拉出来又缩进去了）。

　　【代码五】

void CQQHideWndDlg::DoHide()
{
if(m_hideMode == HM_NONE)
return;

CRect tRect;
GetWindowRect(tRect);

INT height = tRect.Height();
INT width = tRect.Width();

INT steps = 0;

switch(m_hideMode)
{
case HM_TOP:
steps = height/HS_STEPS;
tRect.bottom -= steps;
if(tRect.bottom <= m_edgeWidth)
{ //你可以把下面一句替换上面的 ...+=|-=steps 达到取消抽屉效果
//更好的办法是添加个BOOL值来控制,其他case同样.
tRect.bottom = m_edgeWidth;
m_hsFinished = TRUE; //完成隐藏过程
}
tRect.top = tRect.bottom - height;
break;
case HM_BOTTOM:
steps = height/HS_STEPS;
tRect.top += steps;
if(tRect.top >= (GetSystemMetrics(SM_CYSCREEN) - m_edgeWidth))
{
tRect.top = GetSystemMetrics(SM_CYSCREEN) - m_edgeWidth;
m_hsFinished = TRUE;
}
tRect.bottom = tRect.top + height;
break;
case HM_LEFT:
steps = width/HS_STEPS;
tRect.right -= steps;
if(tRect.right <= m_edgeWidth)
{
tRect.right = m_edgeWidth;
m_hsFinished = TRUE;
}
tRect.left = tRect.right - width;
tRect.top = -m_edgeHeight;
tRect.bottom = GetSystemMetrics(SM_CYSCREEN) - m_taskBarHeight;
break;
case HM_RIGHT:
steps = width/HS_STEPS;
tRect.left += steps;
if(tRect.left >= (GetSystemMetrics(SM_CXSCREEN) - m_edgeWidth))
{
tRect.left = GetSystemMetrics(SM_CXSCREEN) - m_edgeWidth;
m_hsFinished = TRUE;
}
tRect.right = tRect.left + width;
tRect.top = -m_edgeHeight;
tRect.bottom = GetSystemMetrics(SM_CYSCREEN) - m_taskBarHeight;
break;
default:
break;
}

SetWindowPos(&wndTopMost,tRect);
}

　　【代码六】

void CQQHideWndDlg::DoShow()
{
if(m_hideMode == HM_NONE)
return;

CRect tRect;
GetWindowRect(tRect);
INT height = tRect.Height();
INT width = tRect.Width();

INT steps = 0;

switch(m_hideMode)
{
case HM_TOP:
steps = height/HS_STEPS;
tRect.top += steps;
if(tRect.top >= -m_edgeHeight)
{ //你可以把下面一句替换上面的 ...+=|-=steps 达到取消抽屉效果
//更好的办法是添加个BOOL值来控制,其他case同样.
tRect.top = -m_edgeHeight;
m_hsFinished = TRUE; //完成显示过程
}
tRect.bottom = tRect.top + height;
break;
case HM_BOTTOM:
steps = height/HS_STEPS;
tRect.top -= steps;
if(tRect.top <= (GetSystemMetrics(SM_CYSCREEN) - height))
{
tRect.top = GetSystemMetrics(SM_CYSCREEN) - height;
m_hsFinished = TRUE;
}
tRect.bottom = tRect.top + height;
break;
case HM_LEFT:
steps = width/HS_STEPS;
tRect.right += steps;
if(tRect.right >= width)
{
tRect.right = width;
m_hsFinished = TRUE;
}
tRect.left = tRect.right - width;
tRect.top = -m_edgeHeight;
tRect.bottom = GetSystemMetrics(SM_CYSCREEN) - m_taskBarHeight;
break;
case HM_RIGHT:
steps = width/HS_STEPS;
tRect.left -= steps;
if(tRect.left <= (GetSystemMetrics(SM_CXSCREEN) - width))
{
tRect.left = GetSystemMetrics(SM_CXSCREEN) - width;
m_hsFinished = TRUE;
}
tRect.right = tRect.left + width;
tRect.top = -m_edgeHeight;
tRect.bottom = GetSystemMetrics(SM_CYSCREEN) - m_taskBarHeight;
break;
default:
break;
}

SetWindowPos(&wndTopMost,tRect);
}

BOOL CQQHideWndDlg::SetWindowPos(const CWnd* pWndInsertAfter, LPCRECT pCRect, UINT nFlags)
{
return CDialog::SetWindowPos(pWndInsertAfter,pCRect->left, pCRect->top,
pCRect->right - pCRect->left, pCRect->bottom - pCRect->top, nFlags);
}