BOOL
BOOL is a 32‑bit integer used in the Windows API to represent Boolean values.
Syntax
#include <windef.h>
typedef int BOOL;Values
TRUE(1) – Boolean trueFALSE(0) – Boolean false
Remarks
Although BOOL is an integer, it should only be used with the constants TRUE and FALSE. Functions that return BOOL typically indicate success with TRUE and failure with FALSE. When a function fails, you can call GetLastError() to obtain more error information.
Example
#include <windows.h>
#include <stdio.h>
int main(void)
{
BOOL result = SetConsoleTitleA("BOOL Example");
if (result)
{
printf("Title set successfully.\n");
}
else
{
printf("Failed to set title. Error: %lu\n", GetLastError());
}
return 0;
}