// Change the taskbar
private bool UpdateTaskbar(AccentPolicy accent)
{
// Get size of struct
var accentStructSize = Marshal.SizeOf(accent);
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
// Construct data parameter
var data = new WindowCompositionAttributeData();
data.Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY;
data.SizeOfData = accentStructSize;
data.Data = accentPtr;
// Get all processes
Process[] explorerProcesses = Process.GetProcessesByName("explorer");
// Taskbar will be the first process
IntPtr hWnd = explorerProcesses[0].MainWindowHandle;
// Check if function executes
if (SetWindowCompositionAttribute(hWnd, ref data))
{
// Free memory associated with accentPtr
Marshal.FreeHGlobal(accentPtr);
return true;
}
else
{
return false;
}
}
internal static extern bool GetWindowCompositionAttribute(IntPtr point, ref WindowCompositionAttributeData data);
///////////////////////////////////////////////////////
//// METHODS /////
///////////////////////////////////////////////////////
// Update current parameters
public void UpdateParameters()
{
// Variable for our new accent policy
var newAccentPolicy = new AccentPolicy();
// Get size of struct
var accentStructSize = 1024;
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(newAccentPolicy, accentPtr, false);
// Construct data parameter
var data = new WindowCompositionAttributeData();
data.Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY;
data.SizeOfData = accentStructSize;
data.Data = accentPtr;
Console.WriteLine("Before: {0} {1} {2}", data.Data, data.SizeOfData, data.Attribute);
// Get all processes
Process[] explorerProcesses = Process.GetProcessesByName("explorer");
Console.WriteLine("Logic: {0} {1}", explorerProcesses[0].ProcessName, explorerProcesses[0].Id);
IntPtr hWnd = explorerProcesses[0].MainWindowHandle;
try {
// Check if function executes
GetWindowCompositionAttribute(hWnd, ref data);
Console.WriteLine("After: {0} {1} {2}", data.Data, data.SizeOfData, data.Attribute);
} catch (Exception e) {
Console.WriteLine("Error occurred: {0}", e);
} finally
{
// Free memory associated with accentPtr
//Marshal.FreeHGlobal(accentPtr);
}
}