Question

编辑：我使用以下代码在我窗口的非客户区（标题栏）上绘制按钮。所以我的问题是：是否可以通过此按钮处理鼠标点击事件？

bool MainWindow::winEvent(MSG *pMessage, long *result)
{
    UINT m = pMessage->message;
    if(m == WM_NCPAINT || m == WM_ACTIVATE)
    {
        HWND id = winId();
        HDC hDeviceContext = GetWindowDC(id);
        RECT rc = {10, 10, 65, 25};
        DrawFrameControl(hDeviceContext, &rc, DFC_BUTTON, DFCS_BUTTONPUSH);
        ReleaseDC(id, hDeviceContext);
        return true;
    }
    return QWidget::winEvent(pMessage, result);
}

Answer 1

是的，这很容易做到。 Windows专门为非客户端区域提供了几条消息。例如，您有WM_NCMOUSEMOVE，可以像WM_MOUSEMOVE一样处理，但专门针对非客户区域。大多数消息的工作方式类似于客户区域消息，并且通常具有相同的数据结构。以下是非客户区消息的列表。

WM_NCCREATE
WM_NCDESTROY 
WM_NCCALCSIZE
WM_NCHITTEST 
WM_NCPAINT 
WM_NCACTIVATE

WM_NCMOUSEMOVE
WM_NCLBUTTONDOWN
WM_NCLBUTTONUP
WM_NCLBUTTONDBLCLK
WM_NCRBUTTONDOWN
WM_NCRBUTTONUP
WM_NCRBUTTONDBLCLK
WM_NCMBUTTONDOWN
WM_NCMBUTTONUP
WM_NCMBUTTONDBLCLK

WM_NCXBUTTONDOWN
WM_NCXBUTTONUP
WM_NCXBUTTONDBLCLK

WM_NCMOUSEHOVER
WM_NCMOUSELEAVE

如何在非客户区域处理按钮事件

1 个答案: