問題描述

如何處理 Windows 消息循環中的按鍵和按鍵事件?我需要能夠調用兩個函數 OnKeyUp(char c); 和 OnKeyDown(char c);.

How do I handle key presses and key up events in the windows message loop? I need to be able to call two functions OnKeyUp(char c); and OnKeyDown(char c);.

我從谷歌搜索中發現的當前文獻讓我對 WM_CHAR 或 WM_KEYUP 和 WM_KEYDOWN 感到困惑，并且通常針對 PDA 或托管代碼，而我使用的是 C++.

Current literature I've found from googling has lead me to confusion over WM_CHAR or WM_KEYUP and WM_KEYDOWN, and is normally targeted at PDA or Managed code, whereas I'm using C++.

推薦答案

使用char c = MapVirtualKey(param,MAPVK_VK_TO_CHAR);將虛擬鍵碼轉換為char，并處理WM_KEYUP和WM_KEYDOWN及其wParams.

Use char c = MapVirtualKey(param,MAPVK_VK_TO_CHAR); to convert virtual key codes to char, and process WM_KEYUP and WM_KEYDOWN and their wParams.

if (PeekMessage (&mssg, hwnd, 0, 0, PM_REMOVE))
{
    switch (mssg.message)
    {
        case WM_QUIT:
            PostQuitMessage (0);
            notdone = false;
            quit = true;
            break;

        case WM_KEYDOWN:
            WPARAM param = mssg.wParam;
            char c = MapVirtualKey (param, MAPVK_VK_TO_CHAR);
            this->p->Input ()->Keyboard ()->Listeners ()->OnKeyDown (c);
            break;

        case WM_KEYUP:
            WPARAM param = mssg.wParam;
            char c = MapVirtualKey (param, MAPVK_VK_TO_CHAR);
            this->p->Input ()->Keyboard ()->Listeners ()->OnKeyUp (c);
            break;
    }
    // dispatch the message
    TranslateMessage (&mssg);
    DispatchMessage (&mssg);
}

這篇關于鍵盤輸入Win32 消息循環的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！