<1>.工程pro文件添加Dwmapi.lib
LIBS += Dwmapi.lib
<2>.窗体控件添加系统函数
#ifdef Q_OS_WIN
#include <Dwmapi.h> // Use system shadow frame
#endif TMainWindow::TMainWindow(QDialog *parent)
: QDialog(parent)
{
#ifdef Q_OS_WIN
BOOL bEnable = false;
::DwmIsCompositionEnabled(&bEnable);
if (bEnable)
{
DWMNCRENDERINGPOLICY ncrp = DWMNCRP_ENABLED;
::DwmSetWindowAttribute((HWND)winId(), DWMWA_NCRENDERING_POLICY, &ncrp, sizeof(ncrp));
MARGINS margins = { - };
::DwmExtendFrameIntoClientArea((HWND)winId(), &margins);
}
#endif
}
<3>.边框拖拽功能
#define MWS_SYS_DRAG_WIDTH 4 //边框响应鼠标间距
#define FRAME_MINI_WIDTH 1024 //窗体默认最小宽度
#define FRAME_MINI_HEIGHT 768 //窗体默认最小高度
bool TMainWindow::nativeEvent(const QByteArray &eventType, void *message, long *result)
{
#ifdef Q_OS_WIN
MSG *msg = reinterpret_cast<MSG*>(message);
switch (msg->message)
{
case WM_NCHITTEST:
{
QPoint p = mapFromGlobal(QCursor::pos());
int xPos = p.x();
int yPos = p.y();
int nHeigh = height();
int nWidth = width(); *result = HTNOWHERE; if (!isFullScreen() && !isMaximized())
{
if (xPos >= && xPos < MWS_SYS_DRAG_WIDTH){
if (yPos >= && yPos < MWS_SYS_DRAG_WIDTH)
{
*result = HTTOPLEFT;
}
else if (yPos >= (nHeigh - MWS_SYS_DRAG_WIDTH) && yPos <= nHeigh)
{
*result = HTBOTTOMLEFT;
}
else
{
*result = HTLEFT;
}
} if (xPos >= nWidth - MWS_SYS_DRAG_WIDTH && xPos <= nWidth)
{
if (yPos >= && yPos <= MWS_SYS_DRAG_WIDTH)
{
*result = HTTOPRIGHT;
}
else if (yPos >= (nHeigh - MWS_SYS_DRAG_WIDTH) && yPos <= nHeigh)
{
*result = HTBOTTOMRIGHT;
}
else
{
*result = HTRIGHT;
}
} if (xPos >= MWS_SYS_DRAG_WIDTH && xPos < nWidth - MWS_SYS_DRAG_WIDTH
&& yPos > && yPos < MWS_SYS_DRAG_WIDTH)
{
*result = HTTOP;
} if (xPos > MWS_SYS_DRAG_WIDTH && xPos < nWidth - MWS_SYS_DRAG_WIDTH
&& yPos >(nHeigh - MWS_SYS_DRAG_WIDTH) && yPos < nHeigh)
{
*result = HTBOTTOM;
}
}
if (HTNOWHERE == *result)
{
return false;
}
return true;
}
break; case WM_GETMINMAXINFO:
{
MINMAXINFO *mmi = (MINMAXINFO*)(msg->lParam); QRect desktop = qApp->desktop()->availableGeometry(this);
QRect desktopRect = qApp->desktop()->screenGeometry(this); mmi->ptMaxSize.x = desktop.width();
mmi->ptMaxSize.y = desktop.height(); int desktopLeft = desktop.left() - desktopRect.left();
int desktopTop = desktop.top() - desktopRect.top(); mmi->ptMaxPosition.x = desktopLeft;
mmi->ptMaxPosition.y = desktopTop; mmi->ptMinTrackSize.x = FRAME_MINI_WIDTH;
mmi->ptMinTrackSize.y = FRAME_MINI_HEIGHT; mmi->ptMaxTrackSize.x = desktop.width();
mmi->ptMaxTrackSize.y = desktop.height(); result = ; return true;
}
break; case WM_SIZE:
switch (msg->wParam)
{
case SIZE_MAXIMIZED:
break;
case SIZE_RESTORED:
break;
}
break;
}
return QWidget::nativeEvent(eventType, message, result);
#else
return QWidget::nativeEvent(eventType, message, result);
#endif
}