键盘的SendInput()-仅小写 [英] SendInput() for keyboard - only lowercase

问题描述

我有以下代码:

INPUT Input = { 0 };
Input.type       = INPUT_KEYBOARD;
Input.mi.dwFlags = KEYEVENTF_EXTENDEDKEY;
Input.ki.wVk   = 'A'; // tried 0x41, ( UCHAR )VkKeyScan( 'A' )
SendInput( 1, &Input, sizeof( INPUT ) );

但是它仅生成我一个"a".如何强制它也生成大写字母?

but it generates me only 'a'. How to force it to generate upper case as well?

谢谢.

推荐答案

根据Rodrigo回答的注释进行了一些修改.

some modifications according to rodrigo answer in comments.

INPUT Input = { 0 };
// shift key down
Input.type       = INPUT_KEYBOARD;
Input.ki.wVk   = VK_LSHIFT; 
SendInput( 1, &Input, sizeof( INPUT ) );

// 'a' key down
Input.type       = INPUT_KEYBOARD;
Input.ki.wVk   = 'A';
SendInput( 1, &Input, sizeof( INPUT ) );

// 'a' key release
Input.type       = INPUT_KEYBOARD;
Input.ki.dwFlags = KEYEVENTF_KEYUP;
Input.ki.wVk   = 'A';
SendInput( 1, &Input, sizeof( INPUT ) );

// shift key release
Input.type       = INPUT_KEYBOARD;
Input.ki.dwFlags = KEYEVENTF_KEYUP;
Input.ki.wVk   = VK_LSHIFT; 
SendInput( 1, &Input, sizeof( INPUT ) );

这是另一个代码，示例在发送字母后关闭大写字母/移位:

here is another code with an example of turning caps/shift off after sending letter:

INPUT Event = { 0 };

const SHORT key = VkKeyScan('a');
const UINT mappedKey = MapVirtualKey( LOBYTE( key ), 0 );

// Press shift key
Event.type = INPUT_KEYBOARD;
Event.ki.dwFlags = KEYEVENTF_SCANCODE;
Event.ki.wScan = MapVirtualKey( VK_LSHIFT, 0 );
SendInput( 1, &Event, sizeof( Event ) );

// upper case 'A'
Event.type = INPUT_KEYBOARD;
Event.ki.dwFlags = KEYEVENTF_SCANCODE;
Event.ki.wScan = mappedKey;
SendInput( 1, &Event, sizeof( Event ) );

// release upper case 'A'
Event.type = INPUT_KEYBOARD;
Event.ki.dwFlags = KEYEVENTF_SCANCODE | KEYEVENTF_KEYUP;
Event.ki.wScan = mappedKey;
SendInput( 1, &Event, sizeof( Event ) );

// Release shift key
Event.type = INPUT_KEYBOARD;
Event.ki.dwFlags = KEYEVENTF_SCANCODE | KEYEVENTF_KEYUP;
Event.ki.wScan = MapVirtualKey( VK_LSHIFT, 0 );
SendInput( 1, &Event, sizeof( Event ) );

const SHORT key1 = VkKeyScan('A');
const UINT mappedKey1 = MapVirtualKey( LOBYTE( key1 ), 0 );

// lower case 'a'
Event.type = INPUT_KEYBOARD;
Event.ki.dwFlags = KEYEVENTF_SCANCODE;
Event.ki.wScan = mappedKey1;
SendInput( 1, &Event, sizeof( Event ) );

// release lower case 'a'
Event.type = INPUT_KEYBOARD;
Event.ki.dwFlags = KEYEVENTF_SCANCODE | KEYEVENTF_KEYUP;
Event.ki.wScan = mappedKey1;
SendInput( 1, &Event, sizeof( Event ) );

此处的解释(我希望解释是正确的): SendInput()用于键盘-仅大写

explanation here (I hope the explanation is correct): SendInput() for keyboard - only uppercase

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