如何在多显示器系统上检测最大化事件 [英] How to Detect Maximize event on multi-monitor system

问题描述

在 Windows 上，当系统有多个监视器时，C/C++ 如何检测 WM_WINDOWPOSCHANGING 消息上的最大化事件"?也就是说，当窗口在任何显示器上最大化时?

On windows, C/C++ how do I detect the "maximize event" on WM_WINDOWPOSCHANGING message when the system has multiple monitors? That is, when the window is maximized on any display?

(也欢迎其他操作系统的代码！)

(Code for other operating systems is also welcome!)

推荐答案

当窗口最大化时，尤其是作为交互式用户操作的结果，它接收 WM_SYSCOMMAND SC_MAXIMIZE 消息.

When window is to get maximized, esp. as a result of interactive user action, it receives WM_SYSCOMMAND SC_MAXIMIZE message.

最大化过程通常涉及WM_GETMINMAXINFO 消息，处理哪些...

Maximization process typically involves WM_GETMINMAXINFO message, handling which...

应用程序可以使用此消息来覆盖窗口的默认最大化大小和位置，或其默认的最小或最大跟踪大小.

An application can use this message to override the window's default maximized size and position, or its default minimum or maximum tracking size.

检测当前监视器工作区坐标可能最简单的是MonitorFromRect API:

To detect current monitor work area coordinates perhaps the easiest is MonitorFromRect API:

HMONITOR hMonitor = MonitorFromRect(&rcCenter, MONITOR_DEFAULTTONEAREST);
if(hMonitor)
{
    MONITORINFO MonitorInfo = { sizeof MonitorInfo };
    GetMonitorInfo(hMonitor, &MonitorInfo);
    // NOTE: MonitorInfo.rcWork is what you look for

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