C++ 上的 SendInput 不考虑 Ctrl 和 Shift

I'm trying to send a CTRL+SHIFT+END key stroke to a control, in a C++ application written with Embarcadero. I'm using the code below:

tagINPUT ip;
ip.type = INPUT_KEYBOARD;
ip.ki.wScan = 0;
ip.ki.time = 0;
ip.ki.dwExtraInfo = 0;

// Appui sur Ctrl
ip.ki.wVk = VK_CONTROL;
ip.ki.dwFlags = 0;
SendInput(1, &ip, sizeof(INPUT));

// Appui sur Shift
ip.ki.wVk = VK_SHIFT;
ip.ki.dwFlags = 0;
SendInput(1, &ip, sizeof(INPUT));

// Appui sur End
ip.ki.wVk = VK_END;
ip.ki.dwFlags = 0;
SendInput(1, &ip, sizeof(INPUT));

Application->ProcessMessages();

// Relacher End
ip.ki.wVk = VK_END;
ip.ki.dwFlags = KEYEVENTF_KEYUP;
SendInput(1, &ip, sizeof(INPUT));

// Relacher Shift
ip.ki.wVk = VK_SHIFT;
ip.ki.dwFlags = KEYEVENTF_KEYUP;
SendInput(1, &ip, sizeof(INPUT));

// Relacher Ctrl
ip.ki.wVk = VK_CONTROL;
ip.ki.dwFlags = KEYEVENTF_KEYUP;
SendInput(1, &ip, sizeof(INPUT));

However, it appears to be working like if there was no action on the CTRL and SHIFT keys.

我缺少什么？

问题是，VK_END键是扩展键。所以你应该在标志中声明这一点：

eip.ki.dwFlags = 0;
ip.ki.wVk = VK_END;
ip.ki.dwFlags = 0;
ip.ki.dwFlags = ip.ki.dwFlags | 1;
SendInput(1, &ip, sizeof(INPUT));

Application->ProcessMessages();

// Relacher End
ip.ki.wVk = VK_END;
ip.ki.dwFlags = KEYEVENTF_KEYUP;
ip.ki.dwFlags = ip.ki.dwFlags | 1;
SendInput(1, &ip, sizeof(INPUT));

请注意，我使用 1 设置标志，因为我不知道您的 C++ 中是否定义了常量，但假设某个地方有常量。