pb:显示器分辨率

A1:The first function returns the color of a specific pixel(像素;显示器的最小分辨单元). The SetPixel function changes the targeted pixel to the color sent. There is no PowerBuilder equivalent. Global External Function: FUNCTION ulong GetPixel(ulong hwnd, long xpos, long ypos) LIBRARY "Gdi32.dll" FUNCTION ulong SetPixel(ulong hwnd, long xpos, long ypos, ulong pcol) LIBRARY "Gdi32.dll" Script: long lx, ly ulong rtn ulong l_handle, l_device lx = 100 ly = 100 l_handle = handle(w_main) l_device = GetDC(l_handle) rtn = GetPixel(l_device, 100, 100) MessageBox("Position " + string(lx) + "," + string(ly),"Color = " + string(rtn)) SetPixel(l_device, lx, ly, 0) // This call will set the pixel at lx, ly to black.