C 键盘事件

C keyboard events

这是我第一次使用 C 在 Windows API 中编程。我制作了这个简单的程序,它接受一个字符串并在您的计算机上再次输入它。我认为这可以更好地实现,因为我有很多 ifelse if 语句。我的问题是:这是构建这样一个程序的好方法吗?有更好的方法吗?

#include <stdio.h>
#include <windows.h>

void keyboard(char *str)
{
    int x = strlen(str);

    INPUT inputStruct[x];
    ZeroMemory(inputStruct, sizeof(inputStruct));

    for (int i = 0; i < x; i++)
    {
        inputStruct[i].type = 1;

        if (str[i] == 'a')
            inputStruct[i].ki.wVk = 0x41;
        else if (str[i] == 'b')
            inputStruct[i].ki.wVk = 0x42;
        else if (str[i] == 'c')
            inputStruct[i].ki.wVk = 0x43;
        else if (str[i] == 'd')
            inputStruct[i].ki.wVk = 0x44;
        else if (str[i] == 'e')
            inputStruct[i].ki.wVk = 0x45;
        else if (str[i] == 'f')
            inputStruct[i].ki.wVk = 0x46;
        else if (str[i] == 'g')
            inputStruct[i].ki.wVk = 0x47;
        else if (str[i] == 'h')
            inputStruct[i].ki.wVk = 0x48;
        else if (str[i] == 'i')
            inputStruct[i].ki.wVk = 0x49;
        else if (str[i] == 'j')
            inputStruct[i].ki.wVk = 0x4A;
        else if (str[i] == 'k')
            inputStruct[i].ki.wVk = 0x4B;
        else if (str[i] == 'l')
            inputStruct[i].ki.wVk = 0x4C;
        else if (str[i] == 'm')
            inputStruct[i].ki.wVk = 0x4D;
        else if (str[i] == 'n')
            inputStruct[i].ki.wVk = 0x4E;
        else if (str[i] == 'o')
            inputStruct[i].ki.wVk = 0x4F;
        else if (str[i] == 'p')
            inputStruct[i].ki.wVk = 0x50;
        else if (str[i] == 'q')
            inputStruct[i].ki.wVk = 0x51;
        else if (str[i] == 'r')
            inputStruct[i].ki.wVk = 0x52;
        else if (str[i] == 's')
            inputStruct[i].ki.wVk = 0x53;
        else if (str[i] == 't')
            inputStruct[i].ki.wVk = 0x54;
        else if (str[i] == 'u')
            inputStruct[i].ki.wVk = 0x55;
        else if (str[i] == 'v')
            inputStruct[i].ki.wVk = 0x56;
        else if (str[i] == 'w')
            inputStruct[i].ki.wVk = 0x57;
        else if (str[i] == 'x')
            inputStruct[i].ki.wVk = 0x58;
        else if (str[i] == 'y')
            inputStruct[i].ki.wVk = 0x59;
        else if (str[i] == 'z')
            inputStruct[i].ki.wVk = 0x5A;
        else if (str[i] == ' ')
            inputStruct[i].ki.wVk = 0x20;
    }

    SendInput(x, inputStruct, sizeof(INPUT));
}

int main()
{
    keyboard("this is my test program");
}

您可以使用

VkKeyScan

为了将您的字符转换为虚拟键码

那就试试吧

inputStruct[i].ki.wVk = VkKeyScan(str[i]);

而不是像下面这样的一堆 if 子句

if (str[i] == ' ')
    inputStruct[i].ki.wVk = 0x20

所以最终代码如下所示

for (int i = 0; i < x; i++)
{
    inputStruct[i].type = 1;
    inputStruct[i].ki.wVk = VkKeyScan(str[i]);
}

您可以在发送键之前先按 shift,然后发送您希望按大写形式按下的键

下面的代码是您的第二个目的的演示

INPUT inputs[4] = { 0 };
ZeroMemory(inputs, sizeof(inputs));

inputs[0].type = INPUT_KEYBOARD;
inputs[0].ki.wVk = VK_LSHIFT;

inputs[1].type = INPUT_KEYBOARD;
inputs[1].ki.wVk = VkKeyScan(L'a');

inputs[2].type = INPUT_KEYBOARD;
inputs[2].ki.wVk = VkKeyScan(L'a');
inputs[2].ki.dwFlags = KEYEVENTF_KEYUP;

inputs[3].type = INPUT_KEYBOARD;
inputs[3].ki.wVk = VK_LSHIFT;
inputs[3].ki.dwFlags = KEYEVENTF_KEYUP;

UINT uSent = SendInput(ARRAYSIZE(inputs), inputs, sizeof(INPUT));