在python中同时使用QWebEngineView EnumWindows 程序崩溃 5C

在python中同时使用pyqt QWebEngineView win32gui EnumWindows 程序崩溃 ,我是在QWebEngineView 加载完成后才调用 EnumWindows。但是当我独立运行两个语法时是没有错误的

5个回答

是不是有窗口对象为空。导致的错误

yihuiyu123
yihuiyu123 是的 后来我看了 只要加上Qwebengineview 就会出现空的窗口
一年多之前 回复

在python中同时使用pyqt QWebEngineView win32gui EnumWindows 程序崩溃 ,我是在QWebEngineView 加载完成后才调用 EnumWindows。但是当我独立运行两个语法时是没有错误的

代码特别简单,上代码:
#include
#include

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QWebEngineView view;
view.setUrl(QUrl("https://www.baidu.com"));
view.show();
return a.exec();
}

在python中同时使用pyqt QWebEngineView win32gui EnumWindows 程序崩溃

有没有人试过, 在mac下, 把包含网页QWebEngineView的pyqt5程序打包为mac应用程序app, 打开会崩溃,无法打开, 而在mac的下开发是没问题的.......... 但是在windows系统下, 开发和打包为exe程序都没有任何问题... 就是mac下打包出来不??

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void CGetHandleDlg::OnBnClickedButton1()rnrn // TODO: 在此添加控件通知处理程序代码rn EnumWindows((WNDENUMPROC)findmywnd,NULL);rnrnrnbool CALLBACK CGetHandleDlg::findmywnd(HWND hwnd, LPARAM lparam)rnrn CWnd WND;rn WND.m_hWnd=hwnd;rn CString temp;rn WND.GetWindowText(temp);rn if(temp==_T("我的记事本"))rn rn MessageBox(_T("找到窗口"));rn return true;rn rn return false;rnrnrn发生如下错误,请问如何解决啊?rncannot convert from 'overloaded-function' to 'WNDENUMPROC'
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[code=c]int Enumeratecount=0;rnBOOL CALLBACK EnumWindowsProc(HWND hwnd,LPARAM lParam )rnrnif(Enumeratecount<0)rn::MessageBox(NULL,0,0,0);//为什么Enumeratecount的值小于了0?照理说它不小于才对但是它还是运行了,这是怎么回事?rnrnEnumeratecount--;rn if (hwnd == NULL) rn rn return FALSE; rn rn elsern rn return true;rn rn if(Enumeratecount==0)rn return FALSE; rnrnVOID CALLBACK TimerProcrn(rn HWND hwnd, // handle of window for timer messagesrn UINT uMsg, // WM_TIMER messagern UINT idEvent, // timer identifierrn DWORD dwTime // current system timern )rnrn Enumeratecount=20;rn EnumWindows(EnumWindowsProc,NULL);rn[/code]
EnumWindows,回调函数
//---------------------------------------------------------------------------rnrn#include rn#include "Unit1.h"rn#include rn#include rn#include rn#include rnrn//---------------------------------------------------------------------------rnrn#pragma argsusedrnvoid main(int argc, char* argv[])rnrn HANDLE hSnapshot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);rn PROCESSENTRY32 *pProcInfo=new PROCESSENTRY32;rn pProcInfo->dwSize=sizeof(PROCESSENTRY32);rn Process32First(hSnapshot,pProcInfo);rn HWND h_QQMain = NULL;rn DWORD bOKToKill = FALSE;rn dorn rn if(strcmp("calc.exe",pProcInfo->szExeFile)==0)rn rn h_QQMain=(HWND)OpenProcess(PROCESS_ALL_ACCESS,0,pProcInfo->th32ProcessID);rn HWND hCurWindow;rn hCurWindow = GetWindow(h_QQMain,GW_OWNER);rn SendMessage(hCurWindow, WM_CLOSE, 0, 0); //为什么不能关闭,QQ.exern EnumWindows(EnumWindowsProc,0);rn rn while(Process32Next(hSnapshot,pProcInfo));rnrnrnrn BOOL CALLBACK EnumWindowsProc(HWND hwnd,LPARAM lparam)rn rnrn return true;rn rnrn为什么我这段代码编译不过呢?提示错误:rn[C++ Error] EnumProc.cpp(30): E2034 Cannot convert 'int (__stdcall *)(void *,long)' to 'int (__stdcall *)()'rn[C++ Error] EnumProc.cpp(30): E2342 Type mismatch in parameter 'lpEnumFunc' (wanted 'int (__stdcall *)()', got 'int (__stdcall *)(void *,long)')rnrn说EnumWindowsProc声明有问题呢?为什么rn
enumwindows的用法????
关于enumwindows的第二个参数有几种,rn我只想列举任务栏和状态区的应用程序,不包括它的子窗口,该如何实现???
EnumWindows失败?
[code=c]int CALLBACK EnumWindowsProc(HWND hwnd, LPARAM param)rnrn DWORD pID;rn DWORD TpID = GetWindowThreadProcessId(hwnd, &pID);//get process idrn if (TpID == (DWORD)param)rn rn apphwnd=hwnd;//hwnd is the window handlern SetEvent(g_hEvent);rn return false;rn rn ResetEvent(g_hEvent);rn return true;rn rnrn ::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Iterate all windows[/code]rnrn设置了断点,跑了很久,一直不退出rnrn
EnumWindows中的回调函数怎么用?
在基于对话框的程序中,用::EnumWindows(EnumWindowProc,NULL);rn这是回调函数rnBOOL CALLBACK CMyDlg::EnumWindowProc(HWND hwnd,LPARAM lParam) rnrn....rnrn报错:rncannot convert parameter 1 from 'int (struct HWND__ *,long)' to 'int (__stdcall *)(struct HWND__ *,long)'rn怎么转换啊?
EnumWindows枚举应用程序EnumWindows(EnumWindowsProc,NULL);
BOOL CALLBACK EnumWindowsProc(HWND hwnd,LPARAM lparam);rnvoid main()rnrn EnumWindows(EnumWindowsProc,NULL);rnrnBOOL CALLBACK EnumWindowsProc(HWND hwnd,LPARAM lparam)rn rn char name[255];rn GetWindowText(hwnd,name,255);rn printf("%s\n",name);rn return 1;rnrn为什么枚举结果和任务管理器的表列多了那么莫名其妙的东东
enumwindows的问题
声明了static BOOL CALLBACK CStartDlg::EnumWindowsProc(HWND hwnd, DWORD lParam)rn调用EnumWindows(EnumWindowsProc,(long)0);提示出错---------rnrn'EnumWindows' : cannot convert parameter 1 fromrn 'int (struct HWND__ *,unsigned long)' torn rn'int (__stdcall *)(struct HWND__ *,long)'
EnumWindows的问题?
EnumWindows怎么用啊?是一次调用就遍历所有窗口,每发现一个窗口就调用那个回调函数一次,直到所有窗口遍历结束?还是每调用一次EnumWindows才调用一次那个回调函数?
关于EnumWindows
用EnumWindows列举窗口,想像任务管理器的“应用程序”,或者按下Alt+Tab所显示的应用程序一样。rn使用GetWindowLong获得窗口属性来筛选窗口。rnDWORD dwExtendedStyle = GetWindowLong(hwnd, GWL_EXSTYLE);rnDWORD dwStyle = GetWindowLong(hwnd,GWL_STYLE);rnrnif ( (!(dwExtendedStyle & WS_EX_TOOLWINDOW)) &&rn ( dwExtendedStyle & WS_EX_APPWINDOW ) &&rn ( dwStyle & WS_VISIBLE) )rn可是这样会丢失很多窗口。求助。。。rn
EnumWindows问题
EnumWindows(EnumWindowsProc,NULL);rnrnBOOL CALLBACK EnumWindowsProc(HWND hwnd,LPARAM lparam)rn rn char name[255];rn GetWindowText(hwnd,name,255);rn printf("%s\n",name);rn return TRUE ;rnrn为什么枚举结果那么多,很多窗口就不存在?怎么枚举出任务管理器应用程序那一栏
程序崩溃了
自定义CTermSocket 类继承于 CAsyncSocket,我想在CTermSocket 类的OnConnect函数中调用CTermView(继承于CEditView)的成员函数。rnrnrn于是在CTermSocket 头文件中定义了CTermView *pView;rnrn可是当我在CTermSocket 类的OnConnect函数中这样使用的时候,程序就崩溃了:rnrnvoid CTermSocket::OnConnect(int nErrorCode) rnrn // TODO: Add your specialized code here and/or call the base classrn pView = new CTermView;rn ASSERT(pView);rn pView->OnConnect(nErrorCode); rn CAsyncSocket::OnConnect(nErrorCode);rnrnrn这是怎么回事呀???
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