- 1 year ago
Reverse op for GetKeyNameText
The GetKeyNameText
function from the Windows API retrieves the name of a key based on its virtual-key code. However, there is no built-in reverse operation to directly obtain the virtual-key code from the key name.
To achieve the reverse operation, you would need to manually map the key names to their corresponding virtual-key codes. You can create a lookup table or use a switch statement to map the key names to the appropriate virtual-key codes.
Here's an example that demonstrates the reverse operation using a lookup table:
cpp#include <iostream>
#include <unordered_map>
#include <Windows.h>
std::unordered_map<std::wstring, int> keyNameToVKCode = {
{ L"A", VK_A },
{ L"B", VK_B },
{ L"C", VK_C },
// Add more key names and their corresponding virtual-key codes
};
int GetVirtualKeyCode(const std::wstring& keyName)
{
auto it = keyNameToVKCode.find(keyName);
if (it != keyNameToVKCode.end()) {
return it->second;
}
else {
return -1; // Key name not found
}
}
int main()
{
std::wstring keyName = L"A"; // Example key name
int vkCode = GetVirtualKeyCode(keyName);
if (vkCode != -1) {
std::wcout << L"Virtual-Key Code: " << vkCode << std::endl;
}
else {
std::wcout << L"Key name not found." << std::endl;
}
return 0;
}
In this example, the GetVirtualKeyCode
function takes a key name as input and returns the corresponding virtual-key code using the lookup table. If the key name is not found in the table, it returns -1 to indicate that the key name is not recognized.
You can extend the lookup table with more key names and their virtual-key codes as needed.