C++ window正在不断地进行WM_WindowPosChange
我已经创建了一个窗口,并在父窗口中嵌入了一个CAxWindow 当我创建主窗口时,我也创建CAxWindow窗口。现在的问题是,我已经在我的主窗口中添加了WM_WindowPosChangeing消息,并且不断地调用它。最初,它被称为右坐标值,但一段时间后,它被称为wit x=0,y=0,width和height=0 知道为什么会这样吗 若我把断点放在onWindowPosChanged中,我可以看到pwp->x=0,pwp->y=0,pwp->cx=0,pwp->cy=0 这是代码C++ window正在不断地进行WM_WindowPosChange,c++,winapi,atl,wtl,C++,Winapi,Atl,Wtl,我已经创建了一个窗口,并在父窗口中嵌入了一个CAxWindow 当我创建主窗口时,我也创建CAxWindow窗口。现在的问题是,我已经在我的主窗口中添加了WM_WindowPosChangeing消息,并且不断地调用它。最初,它被称为右坐标值,但一段时间后,它被称为wit x=0,y=0,width和height=0 知道为什么会这样吗 若我把断点放在onWindowPosChanged中,我可以看到pwp->x=0,pwp->y=0,pwp->cx=0,pwp->cy=0 这是代码 #incl
#include <atlbase.h>
#include <atlwin.h>
#include <atlcom.h>
CComModule _Module;
// To create an ATL window, begin by deriving from CWindowImpl<>.
class CMainWindow : public CWindowImpl<CMainWindow, CWindow,
CWinTraits<WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE, 0 > >
{
public:
CMainWindow(const RECT rect);
virtual ~CMainWindow();
// Enable a table driven WndProc.
BEGIN_MSG_MAP(CMainWindow)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
MESSAGE_HANDLER(WM_MOUSEMOVE,OnMouseMove)
MESSAGE_HANDLER(WM_SETFOCUS,OnSetFocus)
MESSAGE_HANDLER(WM_KILLFOCUS,OnKillFocus)
MESSAGE_HANDLER(WM_CREATE,OnCreate)
MESSAGE_HANDLER(WM_WINDOWPOSCHANGING, OnWindowPosChanging)
END_MSG_MAP()
LRESULT OnPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnMouseMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnSetFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnWindowPosChanging(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
private:
CAxWindow m_wndIE;
RECT m_Rect;
};
LRESULT CMainWindow ::OnWindowPosChanging(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
WINDOWPOS* pwp= (WINDOWPOS*)lParam;
if (pwp)
{
m_wndIE.SetWindowPos(NULL, pwp->x, pwp->y, pwp->cx, pwp->cy, SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOZORDER |SWP_NOCOPYBITS);
}
bHandled= FALSE;
return 0;
}
LRESULT CMainWindow::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
m_wndIE.Create(m_hWnd, m_Rect, NULL, WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_TABSTOP |WS_BORDER);
m_wndIE.CreateControl(L"{8856F961-340A-11D0-A96B-00C04FD705A2}", NULL, NULL);
bHandled = false;
return 0;
}
// Paint some centered text into the client area.
LRESULT CMainWindow:: OnSetFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
bHandled = false;
return 0;
}
// Paint some centered text into the client area.
LRESULT CMainWindow:: OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
bHandled = false;
return 0;
}
// Paint some centered text into the client area.
LRESULT CMainWindow:: OnMouseMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
//MessageBox("OnMouseMove","",MB_OK);
bHandled = false;
return 0;
}
// Paint some centered text into the client area.
LRESULT CMainWindow:: OnPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
// This example makes use of a number of Win32 API calls.
// See online help (if necessary).
PAINTSTRUCT ps;
BeginPaint(&ps);
HDC hDC = GetDC();
RECT r;
GetClientRect(&r);
DrawText(hDC, "My ATL Window", -1, &r, DT_SINGLELINE |
DT_VCENTER | DT_CENTER);
EndPaint(&ps);
ReleaseDC(hDC);
return 0;
}
// Create and destroy this window.
CMainWindow::CMainWindow(const RECT rect)
{
CopyRect(&m_Rect,&rect);
// // Create my window.
//RECT rc= {10, 10, 200, 200};
// Create(NULL, rc, "My ATL Window");
// ShowWindow(SW_SHOWNORMAL);
}
CMainWindow::~CMainWindow()
{
/* if(m_hWnd)
DestroyWindow();*/
}
//CMainWindow theWind;
int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst,
PSTR szCommand, int iShow)
{
_Module.Init(NULL,hInst);
RECT rect={ 200,200,300,300};
CMainWindow mw(rect);
mw.Create(NULL,rect,_T("MyWindow"),
WS_OVERLAPPEDWINDOW | WS_VISIBLE);
MSG msg;
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
_Module.Term();
return 0;
}
#包括
#包括
#包括
C模块(U模块);
//要创建ATL窗口,首先从CWindowImpl派生。
类CMainWindow:公共CWindowImpl
{
公众:
CMainWindow(const RECT RECT);
虚拟~CMainWindow();
//启用表驱动的WndProc。
开始消息映射(CMainWindow)
消息处理程序(WM\U PAINT、OnPaint)
消息处理程序(WM_MOUSEMOVE、OnMouseMove)
消息处理程序(WM\U设置焦点、OnSetFocus)
消息处理程序(WM\U KILLFOCUS、OnKillFocus)
消息处理程序(WM\U CREATE,OnCreate)
消息处理程序(WM_WindowPosChanged、OnWindowPosChanged)
END_MSG_MAP()
LRESULT OnPaint(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL和bHandled);
移动鼠标的结果(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL和bHandled);
LRESULT OnSetFocus(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled);
LRESULT OnKillFocus(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled);
LRESULT OnCreate(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL和bHandled);
LRESULT onWindowPosChanged(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL和bHandled);
私人:
CAxWindow m_wndIE;
RECT m_RECT;
};
LRESULT CMainWindow::OnWindowPosChanged(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL和bHandled)
{
WINDOWPOS*pwp=(WINDOWPOS*)LPRAM;
如果(pwp)
{
设置窗口位置(NULL,pwp->x,pwp->y,pwp->cx,pwp->cy,SWP|u SHOWWINDOW | SWP|u NOMOVE | SWP|u NOZORDER | SWP|u nocopybit);
}
bHandled=FALSE;
返回0;
}
LRESULT CMainWindow::OnCreate(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled)
{
创建(m|hWnd,m|Rect,NULL,WS|u CHILD | WS|u CLIPCHILDREN | WS|u CLIPSIBLINGS | WS|u TABSTOP | WS|u BORDER);
m_wndIE.CreateControl(L“{8856F961-340A-11D0-A96B-00C04FD705A2}”,空,空);
bHandled=false;
返回0;
}
//在客户区中绘制一些居中文本。
LRESULT CMainWindow::OnSetFocus(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled)
{
bHandled=false;
返回0;
}
//在客户区中绘制一些居中文本。
LRESULT CMainWindow::OnKillFocus(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled)
{
bHandled=false;
返回0;
}
//在客户区中绘制一些居中文本。
LRESULT CMainWindow::OnMouseMove(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled)
{
//消息框(“OnMouseMove”,“MB_OK”);
bHandled=false;
返回0;
}
//在客户区中绘制一些居中文本。
LRESULT CMainWindow::OnPaint(UINT uMsg、WPARAM WPARAM、LPARAM LPARAM、BOOL&bHandled)
{
//本例使用了大量Win32 API调用。
//请参阅联机帮助(如有必要)。
PAINTSTRUCT-ps;
开始粉刷(&ps);
HDC HDC=GetDC();
矩形r;
GetClientRect&r;
DrawText(hDC,“我的ATL窗口”、-1、&r、DT_单线|
DT|U VCENTER | DT|U CENTER);
EndPaint&ps;
释放DC(hDC);
返回0;
}
//创建并销毁此窗口。
CMainWindow::CMainWindow(const RECT RECT)
{
CopyRect(&m_Rect,&Rect);
////创建我的窗口。
//RECT rc={10,10,200,200};
//创建(空,rc,“我的ATL窗口”);
//显示窗口(SW_显示正常);
}
CMainWindow::~CMainWindow()
{
/*如果(m_hWnd)
破坏窗口()*/
}
//在风中;
int WINAPI WinMain(HINSTANCE hInst、HINSTANCE hPrevInst、,
PSTR szCommand,int iShow)
{
_Module.Init(NULL,hInst);
RECT RECT={200300300};
cmainwindowmw(rect);
mw.Create(NULL,rect,_T(“MyWindow”),
WS_重叠窗口(WS|u可见);
味精;
while(GetMessage(&msg,NULL,0,0))
{
翻译信息(&msg);
发送消息(&msg);
}
_Module.Term();
返回0;
}
这一行
m_wndIE.SetWindowPos(NULL, pwp->x, pwp->y, pwp->cx, pwp->cy, SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOZORDER |SWP_NOCOPYBITS);
看起来很可疑。WM_WindowPosChange发送给您,允许您的窗口否决可能的移动。转发消息几乎肯定会导致您的孩子IE窗口移出框架
对标志有一个简单的描述。你能给我们看一下代码吗?它是某个项目的一部分,我不能共享整个代码。让我试着创建一些示例。检查
WINDOWPOS
结构的flags
成员-其他成员如x
和y
并不总是有效/定义的。@0x499602D2我有添加了代码。@Alien01:67相当于SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE
,这意味着x
/y
/宽度
/高度
无效。