- 1 year ago
Override CTRL-HANDLERS windows C
To override the default Ctrl handlers in a Windows C application, you can use the SetConsoleCtrlHandler
function. This allows you to define your own handler function to handle specific Ctrl events such as Ctrl+C and Ctrl+Break. Here's an example:
c#include <stdio.h>
#include <windows.h>
// Ctrl handler function
BOOL CtrlHandler(DWORD ctrlType) {
switch (ctrlType) {
case CTRL_C_EVENT:
printf("Ctrl+C received. Handling the event...\n");
// Add your custom handling logic here
// ...
return TRUE; // Return TRUE to indicate the event was handled
case CTRL_BREAK_EVENT:
printf("Ctrl+Break received. Handling the event...\n");
// Add your custom handling logic here
// ...
return TRUE; // Return TRUE to indicate the event was handled
default:
return FALSE; // Return FALSE to let the default handler handle the event
}
}
int main() {
// Set the Ctrl handler
if (!SetConsoleCtrlHandler((PHANDLER_ROUTINE)CtrlHandler, TRUE)) {
printf("Failed to set Ctrl handler.\n");
return 1;
}
// Do your application logic here
// ...
return 0;
}
In the above example, the CtrlHandler
function is defined to handle Ctrl events. Inside the function, you can add your custom logic to handle specific events. The function should return TRUE
if the event was handled, and FALSE
to let the default handler handle the event.
The SetConsoleCtrlHandler
function is then called in the main
function to set the Ctrl handler. It takes the CtrlHandler
function as the handler routine and TRUE
as the Add
parameter to add the handler.
By using this approach, you can override the default Ctrl handlers in a Windows C application and define your own custom handling logic.