118 lines
3.8 KiB
Python
118 lines
3.8 KiB
Python
import win32api
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import win32clipboard
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import win32con
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import win32gui
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class ViewerWindow:
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def __init__(self):
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self.hwndNextViewer = None
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def OnPaint(self, hwnd, msg, wp, lp):
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dc, ps = win32gui.BeginPaint(hwnd)
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wndrect = win32gui.GetClientRect(hwnd)
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wndwidth = wndrect[2] - wndrect[0]
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wndheight = wndrect[3] - wndrect[1]
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win32clipboard.OpenClipboard()
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try:
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try:
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hbitmap = win32clipboard.GetClipboardData(win32clipboard.CF_BITMAP)
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except TypeError:
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font = win32gui.LOGFONT()
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font.lfHeight = 15 # int(wndheight/20)
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font.lfWidth = 15 # font.lfHeight
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# font.lfWeight=150
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hf = win32gui.CreateFontIndirect(font)
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win32gui.SelectObject(dc, hf)
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win32gui.SetBkMode(dc, win32con.TRANSPARENT)
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win32gui.SetTextColor(dc, win32api.RGB(0, 0, 0))
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win32gui.DrawText(
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dc,
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"No bitmaps are in the clipboard\n(try pressing the PrtScn button)",
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-1,
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(0, 0, wndwidth, wndheight),
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win32con.DT_CENTER,
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)
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else:
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bminfo = win32gui.GetObject(hbitmap)
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dcDC = win32gui.CreateCompatibleDC(None)
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win32gui.SelectObject(dcDC, hbitmap)
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win32gui.StretchBlt(
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dc,
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0,
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0,
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wndwidth,
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wndheight,
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dcDC,
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0,
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0,
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bminfo.bmWidth,
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bminfo.bmHeight,
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win32con.SRCCOPY,
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)
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win32gui.DeleteDC(dcDC)
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win32gui.EndPaint(hwnd, ps)
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finally:
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win32clipboard.CloseClipboard()
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return 0
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def OnDrawClipboard(self, hwnd, msg, wp, lp):
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win32gui.InvalidateRect(hwnd, None, True)
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def OnChangeCBChain(self, hwnd, msg, wp, lp):
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# If the next window is closing, repair the chain.
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if wp == self.hwndNextViewer:
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self.hwndNextViewer = lp
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# Otherwise, pass the message to the next link.
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elif self.hwndNextViewer:
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win32gui.SendMessage(self.hwndNextViewer, msg, wp, lp)
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def OnCreate(self, hwnd, msg, wp, lp):
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self.hwndNextViewer = win32gui.SetClipboardViewer(hwnd)
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def OnClose(self, hwnd, msg, wp, lp):
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win32clipboard.ChangeClipboardChain(hwnd, self.hwndNextViewer)
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win32gui.DestroyWindow(hwnd)
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win32gui.PostQuitMessage(0)
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def go(self):
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wndproc = {
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win32con.WM_PAINT: self.OnPaint,
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win32con.WM_CLOSE: self.OnClose,
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win32con.WM_CREATE: self.OnCreate,
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win32con.WM_DRAWCLIPBOARD: self.OnDrawClipboard,
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win32con.WM_CHANGECBCHAIN: self.OnChangeCBChain,
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}
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wc = win32gui.WNDCLASS()
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wc.lpszClassName = "test_win32clipboard_bmp"
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wc.style = win32con.CS_GLOBALCLASS | win32con.CS_VREDRAW | win32con.CS_HREDRAW
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wc.hbrBackground = win32con.COLOR_WINDOW + 1
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wc.lpfnWndProc = wndproc
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class_atom = win32gui.RegisterClass(wc)
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hwnd = win32gui.CreateWindowEx(
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0,
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class_atom,
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"ClipboardViewer",
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win32con.WS_CAPTION
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| win32con.WS_VISIBLE
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| win32con.WS_THICKFRAME
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| win32con.WS_SYSMENU,
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100,
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100,
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900,
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900,
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0,
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0,
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0,
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None,
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)
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win32clipboard.SetClipboardViewer(hwnd)
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win32gui.PumpMessages()
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win32gui.UnregisterClass(class_atom, None)
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if __name__ == "__main__":
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w = ViewerWindow()
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w.go()
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