Here are a few title options, keeping in mind the question format and the article\'s focus on WinAPI methods for screen resolution: Option 1 (Direct and Specific): * How to Get the Screen Resolution

How to Acquire Current Screen Resolution: Options from WinAPI

Determining the current screen resolution in Windows is crucial when initiating a full-screen OpenGL window with the same dimensions as the desktop. Here's a comprehensive guide on detecting screen resolution using WinAPI methods:

• Primary Monitor Resolution:

  • Retrieve the width and height in pixels using GetSystemMetrics(SM_CXSCREEN) and GetSystemMetrics(SM_CYSCREEN).
  • Alternatively, employ GetDeviceCaps(screen_hdc, HORZRES) and GetDeviceCaps(screen_hdc, VERTRES) for the horizontal and vertical resolutions, respectively.

• Combined Resolution of All Monitors:

  • Utilize GetSystemMetrics(SM_CXVIRTUALSCREEN) and GetSystemMetrics(SM_CYVIRTUALSCREEN) for the total width and height.

• Work Area Resolution (Excluding Taskbar):

  • Obtain the work area dimensions by calling SystemParametersInfo(SPI_GETWORKAREA, sizeof(RECT), &rect_ptr, 0) and then extract the rect_ptr values for width and height.

• Specific Monitor Resolution:

  • Employ GetMonitorInfo() with the appropriate HMONITOR to obtain both the work area and full screen dimensions.

Additional Considerations:

• Remember that monitor coordinates may not always start at 0,0. Use MonitorFromWindow() to find the active monitor for a window before using GetMonitorInfo().
• To alter screen resolution or retrieve refresh rates, leverage low-level API functions such as EnumDisplayDevices(), EnumDisplaySettings(), and ChangeDisplaySettings().
• GetDeviceCaps() can also provide color depth information.

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