获取Windows窗口

抄自：  https://blog.csdn.net/freedom2211/article/details/131288406

windowIterator.h

class CWindowIterator
{

private:
static char* wchar2char(const wchar_t* wchar);
static BOOL CALLBACK EnumWindowsProc(HWND window, LPARAM lParam);

public:
using EnumCallback = std::function<void(std::string &str)>;

void EnumWindow(EnumCallback callback);

};
+================================

windowIterator.cpp

char* CWindowIterator::wchar2char(const wchar_t* wchar)
{
char* pchar;
int len = WideCharToMultiByte(CP_ACP, 0, wchar, wcslen(wchar), NULL, 0, NULL, NULL);
pchar = new char[len + 1];
WideCharToMultiByte(CP_ACP, 0, wchar, wcslen(wchar), pchar, len, NULL, NULL);
pchar[len] = '\0';
return pchar;
}

BOOL CALLBACK CWindowIterator::EnumWindowsProc(HWND window, LPARAM lParam)
{
if (!IsWindow(window))
return TRUE;

if (!IsWindowVisible(window))
return TRUE;

DWORD flag = 0;
DwmGetWindowAttribute(window, DWMWA_CLOAKED, &flag, sizeof(flag));
if (flag)
return TRUE;

UINT wnd_style_ex = GetWindowLong(window, GWL_EXSTYLE);
if ((WS_EX_TOOLWINDOW & wnd_style_ex) == WS_EX_TOOLWINDOW)
return TRUE;

TCHAR szTitle[MAX_PATH] = { 0 };
::GetWindowText(window, szTitle, MAX_PATH); // 获取标题
if (wcslen(szTitle) == 0)
return TRUE;

std::string str = wchar2char(szTitle);
if (lParam) {
EnumCallback* cb = reinterpret_cast<EnumCallback*>(lParam);
(*cb)(str);
}

return TRUE;
}

void CWindowIterator::EnumWindow(EnumCallback callback)
{
::EnumWindows(EnumWindowsProc, (LPARAM)&callback);
}

==========================

windowIteratorTest.cpp

#include <iostream>
#include "windowIterator.h"

int main()
{
CWindowIterator wi;
wi.EnumWindow([](std::string &str) {
std::cout << str << std::endl;
});
return 0;
}