所以我创建了这个弹出窗口,其中包含自定义移动和大小调整,按住ctrl并单击客户端中的任意位置以移动并按边框大小调整大小。问题是,现在我正在这个窗口内创建子窗口,这里出现“错误”。我找不到如何将消息发送到父窗口。 这就是我尝试过的。
我在父窗口的wndproc中处理这些消息
case WM_NCHITTEST:
//determines if the window should be moving, sizing or don't do a thing
return DoHitTest(pWnd, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) );
case WM_NCLBUTTONDOWN:
//just set the cursor for visual notice
if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
SetCursor(LoadCursor(NULL, IDC_SIZEALL));
break;
这是doHitTest方法
int WindowGnaq::DoHitTest(WindowBase* pWnd, int x, int y)
{
if( GetAsyncKeyState( VK_CONTROL ) & 0x8000 )
return HTCAPTION;
if( m_bAdjustable && GetAsyncKeyState( VK_MENU ) & 0x8000 )
{
short spare = 5;
RECT r;
pWnd->GetRect(r);
r.right -= 1;
r.bottom -= 1;
if (x < (r.left + spare) && y < (r.top + spare))
return HTTOPLEFT;
else if (x < (r.left + spare) && y > (r.bottom - spare))
return HTBOTTOMLEFT;
else if (x < (r.left + spare))
return HTLEFT;
else if (x > (r.right - spare) && y < (r.top + spare))
return HTTOPRIGHT;
else if (x > (r.right - spare) && y > (r.bottom - spare))
return HTBOTTOMRIGHT;
else if (x > (r.right - spare))
return HTRIGHT;
else if (y < (r.top + spare))
return HTTOP;
else if (y > (r.bottom - spare))
return HTBOTTOM;
}
return HTCLIENT;
}
这就是我在childs窗口过程中尝试的内容
case WM_NCHITTEST:
//this just moves the mouse to the border i don't have but doesn't make me able to move
return SendMessage( m_pParent->GetHandle(), WM_SYSCOMMAND, SC_MOVE, -1);
//this doesn't to anything
return PostMessage( m_pParent->GetHandle(), msg, wParam, lParam);
//this makes the childwindow move instead of the parent
return SendMessage( m_pParent->GetHandle(), msg, wParam, lParam);
答案 0 :(得分:4)
儿童的窗口程序应返回HTTRANSPARENT
以回复WM_NCHITTEST
,并(引用MSDN)"the message will be sent to underlying windows in the same thread until one of them returns a code that is not HTTRANSPARENT"
。