This is my first time programming in Windows API with C. I made this simple program that takes a string and types it again on your computer. I think this could be implemented better because I have a lot of if
and else if
statements. My question is: Is this a good way to build a program like this? Is there a better way of doing the same?
#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");
}
CodePudding user response:
You can use
VkKeyScan
in order to translate your char to virtual key code
so just try
inputStruct[i].ki.wVk = VkKeyScan(str[i]);
instead of bunch of if clauses like the one below
if (str[i] == ' ')
inputStruct[i].ki.wVk = 0x20
so final code will look like below
for (int i = 0; i < x; i )
{
inputStruct[i].type = 1;
inputStruct[i].ki.wVk = VkKeyScan(str[i]);
}
You can press shift before sending key then send keys as you wish to be pressed as capitals
Below code is the demo for your second purpose
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));