我正在尝试创建一种滑出任务栏的弹出通知窗口。
目前,如果任务栏位于屏幕底部,我只是试图让它工作,我让它按照应有的方式工作。
但问题是,当窗口开始出现/滑动时,它的底部闪烁(取决于我设置m_nIncrement
值的大小,它闪烁的底部区域大小与m_nIncrement
值)
窗口消失得很好,没有闪烁。
//MyWindow
WNDCLASS wc =
{
CS_HREDRAW | CS_VREDRAW, __sWndProcDlg, 0, 0, g_hInst, nullptr,
LoadCursor(nullptr, IDC_ARROW), (HBRUSH)::GetStockObject(BLACK_BRUSH),
nullptr, m_lpszClassName
};
if (!RegisterClass(&wc))
return;
m_hWnd = CreateWindowEx(WS_EX_NOACTIVATE, m_lpszClassName, NULL, WS_POPUP | WS_VISIBLE, 0, 0, 0, 0, m_hWndParent, NULL, g_hInst, NULL);
//ShowWindow
void _ShowWindow(int _show)
{
unsigned int nDesktopWidth = m_rcDesktop.right - m_rcDesktop.left;
unsigned int nDesktopHeight = m_rcDesktop.bottom - m_rcDesktop.top;
unsigned int nScreenWidth = ::GetSystemMetrics(SM_CXSCREEN);
unsigned int nScreenHeight = ::GetSystemMetrics(SM_CYSCREEN);
BOOL bTaskbarOnRight = nDesktopWidth<nScreenWidth && m_rcDesktop.left == 0;
BOOL bTaskbarOnLeft = nDesktopWidth<nScreenWidth && m_rcDesktop.left != 0;
BOOL bTaskBarOnTop = nDesktopHeight<nScreenHeight && m_rcDesktop.top != 0;
BOOL bTaskbarOnBottom = nDesktopHeight<nScreenHeight && m_rcDesktop.top == 0;
if (_show)
{
ShowWindow(m_hWnd, SW_SHOW);
if (bTaskbarOnBottom)
{
m_nCurrentPos.cx = m_rcDesktop.right - m_sMaxSize.cx;
m_nCurrentPos.cy = m_rcDesktop.bottom - m_nCurrentSize.cy;
m_nTaskbarPlacement = TASKBAR_ON_BOTTOM;
}
KillTimer(m_hWnd, IDT_DISAPPEARING);
SetTimer(m_hWnd, IDT_APPEARING, 1, nullptr);
}
else
{
KillTimer(m_hWnd, IDT_APPEARING);
if (bTaskbarOnRight)
m_nCurrentPos.cx = m_rcDesktop.right - m_sMaxSize.cx;
else if (bTaskbarOnLeft)
m_nCurrentPos.cx = m_rcDesktop.left;
else if (bTaskBarOnTop)
m_nCurrentPos.cy = m_rcDesktop.top;
else //if (bTaskbarOnBottom)
m_nCurrentPos.cy = m_rcDesktop.bottom - m_nCurrentSize.cy;
SetTimer(m_hWnd, IDT_DISAPPEARING, 1, NULL);
}
}
//__OnTimer
LRESULT __OnTimer(HWND hWnd, UINT nIDEvent)
{
int m_nIncrement = 20;
if (nIDEvent == IDT_APPEARING)
{
switch (m_nTaskbarPlacement)
{
case TASKBAR_ON_BOTTOM:
if (m_nCurrentPos.cy > (m_rcDesktop.bottom - m_sMaxSize.cy))
{
m_nCurrentPos.cy -= m_nIncrement;
m_nCurrentSize.cy = m_rcDesktop.bottom - m_nCurrentPos.cy;
}
else
KillTimer(hWnd, IDT_APPEARING);
break;
}
SetFocus(hWnd);
SetWindowPos(hWnd, HWND_TOPMOST, m_nCurrentPos.cx, m_nCurrentPos.cy, m_sMaxSize.cx, m_nCurrentSize.cy, SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOACTIVATE);
}
else if (nIDEvent == IDT_DISAPPEARING)
{
switch (m_nTaskbarPlacement)
{
case TASKBAR_ON_BOTTOM:
if (m_nCurrentPos.cy < m_rcDesktop.bottom)
{
m_nCurrentPos.cy += m_nIncrement;
m_nCurrentSize.cy = m_rcDesktop.bottom - m_nCurrentPos.cy;
}
else
{
KillTimer(hWnd, IDT_DISAPPEARING);
MoveWindow(m_hWnd, 0, 0, 0, 0, FALSE);
ShowWindow(m_hWnd, SW_HIDE);
}
break;
}
SetWindowPos(hWnd, HWND_TOPMOST, m_nCurrentPos.cx, m_nCurrentPos.cy, m_sMaxSize.cx, m_nCurrentSize.cy, SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOACTIVATE);
}
return true;
}
答案 0 :(得分:1)
使用AnimateWindow代替。它很容易使用。你可能需要处理WM_PRINT,这也很简单。
如果您想继续处理代码,那么:
1)从弹出类中删除标志CS_HREDRAW&amp; CS_VREDRAW
2)处理WM_ERASEBACKGROUND
最后。如果是弹出窗口,请不要调用SetFocus();也许你必须将zorder设置为TOP_MOST
祝你好运