How prevent console window from extending beyond screen? - c++

Question

If console aplication starts and system creates console window for it, but sometimes this window is created in such coordinates that some of it's contents slide out of right screen edge. Then the user must use mouse to show everything.
How to cope with that ?
What functions use to detect upper right corner coordinates of console window ?
Then I will be able to check if it is outside the screen and move the window just the distance that is needed.
What function use to move window ?
Or maybe there is all in one solution to prevent window from moving outside the screen ?

Answer 1

Here's a fully multi-monitor aware and taskbar aware implementation that does what you describe.
#include <Windows.h>
int main()
{
ClampConsoleToScreen();
return 0;
}
void ClampConsoleToScreen()
{
HWND window = GetConsoleWindow();
RECT windowRect;
GetWindowRect(window, &windowRect);
HMONITOR monitor = MonitorFromWindow(window, MONITOR_DEFAULTTOPRIMARY);
MONITORINFO mi;
memset(&mi, 0, sizeof(mi));
mi.cbSize = sizeof(mi);
GetMonitorInfo(monitor, &mi);
int adj, any;
adj = 0;
any = 0;
if (windowRect.right > mi.rcWork.right)
{
// Get negative adjustment value to move it left onto screen
adj = mi.rcWork.right - windowRect.right;
}
if (windowRect.left < mi.rcWork.left)
{
// Get positive adjustment value to move it right onto screen
adj = mi.rcWork.left - windowRect.left;
}
windowRect.left += adj;
windowRect.right += adj;
any |= adj;
adj = 0;
if (windowRect.bottom > mi.rcWork.bottom)
{
// Get negative adjustment value to move it up onto screen
adj = mi.rcWork.bottom - windowRect.bottom;
}
if (windowRect.top < mi.rcWork.top)
{
// Get positive adjustment value to move it down onto screen
adj = mi.rcWork.top - windowRect.top;
}
windowRect.top += adj;
windowRect.bottom += adj;
any |= adj;
if (any)
{
MoveWindow(window,
windowRect.left,
windowRect.top,
windowRect.right - windowRect.left,
windowRect.bottom - windowRect.top, TRUE);
}
}