void SetLayeredTaskbar(HWND hwndClock)
{
LONG exstyle;
HWND hwnd;
int alpha;
alpha = GetMyRegLongEx("Taskbar", "AlphaTaskbar", 0);
bClearTaskbar = GetMyRegLongEx("Taskbar", "ClearTaskbar", FALSE);
alpha = 255 - (alpha * 255 / 100);
if(alpha < 8) alpha = 8; else if(alpha > 255) alpha = 255;
if(!pSetLayeredWindowAttributes && (alpha < 255 || bClearTaskbar)) InitLayeredWindow();
if(!pSetLayeredWindowAttributes) return;
hwnd = GetParent(GetParent(hwndClock));
exstyle = GetWindowLong(hwnd, GWL_EXSTYLE);
if(alpha < 255 || bClearTaskbar) exstyle |= WS_EX_LAYERED;
else exstyle &= ~WS_EX_LAYERED;
SetWindowLong(hwnd, GWL_EXSTYLE, exstyle);
if(bRefreshClearTaskbar)
{
bRefreshClearTaskbar = FALSE;
RefreshUs();
}
RefreshRebar(hwnd);
if(alpha < 255 && !bClearTaskbar)
pSetLayeredWindowAttributes(hwnd, 0, (BYTE)alpha, LWA_ALPHA);
else if(bClearTaskbar)
pSetLayeredWindowAttributes(hwnd, GetSysColor(COLOR_3DFACE), (BYTE)alpha, LWA_COLORKEY|LWA_ALPHA);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//style_set_transparency
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void style_set_transparency(HWND hwnd, BYTE transvalue, bool transback)
{
if (pSetLayeredWindowAttributes)
{
LONG s = GetWindowLong(hwnd, GWL_EXSTYLE);
UINT flags = 0;
if (transback) flags |= LWA_COLORKEY;
if (transvalue < 255) flags |= LWA_ALPHA;
if (flags)
{
if (0 == (s & WS_EX_LAYERED))
SetWindowLong(hwnd, GWL_EXSTYLE, s | WS_EX_LAYERED);
pSetLayeredWindowAttributes(hwnd, transback ? TRANSCOLOUR : 0, transvalue, flags);
}
else
{
if (0 != (s & WS_EX_LAYERED))
SetWindowLong(hwnd, GWL_EXSTYLE, s & ~WS_EX_LAYERED);
}
}
}
bool
create_window(void)
{
WNDCLASSEX wndClass;
ZeroMemory (&wndClass, sizeof (wndClass));
wndClass.cbSize = sizeof (wndClass);
wndClass.style = CS_HREDRAW | CS_VREDRAW;
wndClass.lpfnWndProc = WndProc;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
wndClass.hInstance = hInst;
wndClass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wndClass.hIconSm = NULL;
wndClass.hCursor = LoadCursor (NULL, IDC_ARROW);
wndClass.hbrBackground = (HBRUSH) GetStockObject(GRAY_BRUSH);
wndClass.lpszMenuName = NULL;
wndClass.lpszClassName = "blackscreen";
if (!RegisterClassEx(&wndClass)) {
// return false;
}
RECT clientRect;
clientRect.left = 0;
clientRect.top = 0;
clientRect.right = GetSystemMetrics(SM_CXSCREEN);
clientRect.bottom = GetSystemMetrics(SM_CYSCREEN);
UINT x(GetSystemMetrics(SM_XVIRTUALSCREEN));
UINT y(GetSystemMetrics(SM_YVIRTUALSCREEN));
UINT cx(GetSystemMetrics(SM_CXVIRTUALSCREEN));
UINT cy(GetSystemMetrics(SM_CYVIRTUALSCREEN));
clientRect.left = x;
clientRect.top = y;
clientRect.right = x + cx;
clientRect.bottom = y + cy;
AdjustWindowRect (&clientRect, WS_CAPTION, FALSE);
hwnd = CreateWindowEx (0,
"blackscreen",
"blackscreen",
WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN|WS_BORDER,
CW_USEDEFAULT,
CW_USEDEFAULT,
cx,
cy,
NULL,
NULL,
hInst,
NULL);
typedef DWORD (WINAPI *PSLWA)(HWND, DWORD, BYTE, DWORD);
PSLWA pSetLayeredWindowAttributes=NULL;
/*
* Code that follows allows the program to run in
* environment other than windows 2000
* without crashing only difference being that
* there will be no transparency as
* the SetLayeredAttributes function is available only in
* windows 2000
*/
HMODULE hDLL = LoadLibrary ("user32");
if (hDLL) pSetLayeredWindowAttributes = (PSLWA) GetProcAddress(hDLL,"SetLayeredWindowAttributes");
/*
* Make the windows a layered window
*/
#ifndef _X64
LONG style = GetWindowLong(hwnd, GWL_STYLE);
style = GetWindowLong(hwnd, GWL_STYLE);
style &= ~(WS_DLGFRAME | WS_THICKFRAME);
SetWindowLong(hwnd, GWL_STYLE, style);
#else
LONG_PTR style = GetWindowLongPtr(hwnd, GWL_STYLE);
style = GetWindowLongPtr(hwnd, GWL_STYLE);
style &= ~(WS_DLGFRAME | WS_THICKFRAME);
SetWindowLongPtr(hwnd, GWL_STYLE, style);
#endif
if (pSetLayeredWindowAttributes != NULL) {
#ifndef _X64
SetWindowLong (hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) |WS_EX_LAYERED|WS_EX_TRANSPARENT|WS_EX_TOPMOST);
#else
SetWindowLongPtr (hwnd, GWL_EXSTYLE, GetWindowLongPtr(hwnd, GWL_EXSTYLE) |WS_EX_LAYERED|WS_EX_TRANSPARENT|WS_EX_TOPMOST);
#endif
ShowWindow (hwnd, SW_SHOWNORMAL);
}
if (pSetLayeredWindowAttributes != NULL) {
/**
* Second parameter RGB(255,255,255) sets the colorkey to white
* LWA_COLORKEY flag indicates that color key is valid
* LWA_ALPHA indicates that ALphablend parameter (factor)
* is valid
*/
pSetLayeredWindowAttributes (hwnd, RGB(255,255,255), 255, LWA_ALPHA);
}
SetWindowPos(hwnd,HWND_TOPMOST,x,y,cx,cy, SWP_FRAMECHANGED|SWP_NOACTIVATE);
//SM_CXVIRTUALSCREEN
return true;
}
