Windows Program Design dialog box 3

# Include <windows. h> # include "resource. H "lresult callback wndproc (hwnd, uint, wparam, lparam); bool callback aboutdlgproc (hwnd, uint, wparam, lparam); lresult callback (hwnd, uint, wparam, lparam); int winapi winmain (hinstance, hinstance hprevinstance, pstr szcmdline, int icmdshow) {static tchar szappname [] = text ("about3"); MSG; hwnd; wndclass; wndclass. style = cs_hredraw | cs_vr Edraw; wndclass. lpfnwndproc = wndproc; wndclass. cbclsextra = 0; wndclass. cbwndextra = 0; wndclass. hinstance = hinstance; wndclass. hicon = loadicon (hinstance, szappname); wndclass. hcursor = loadcursor (null, idc_arrow); wndclass. hbrbackground = (hbrush) getstockobject (white_brush); wndclass. lpszclassname = szappname; wndclass. lpszmenuname = szappname; If (! Registerclass (& wndclass) {MessageBox (null, text ("this program requires Windows NT! "), Szappname, mb_iconerror); Return 0;} wndclass. style = cs_vredraw | cs_hredraw; wndclass. lpfnwndproc = ellippushwndproc; wndclass. cbclsextra = 0; wndclass. cbwndextra = 0; wndclass. hinstance = hinstance; wndclass. hicon = NULL; wndclass. hcursor = loadcursor (null, idc_arrow); wndclass. hbrbackground = (hbrush) (color_btnface + 1); wndclass. lpszmenuname = NULL; wndclass. lpszclassname = text ("ellippush"); // register the ellippush class in winmain and specify the callback function as E. Struct (& wndclass); hwnd = createwindow (szappname, text ("about box demo program"), ws_overlappedwindow, cw_usedefault, null, null, hinstance, null); showwindow (hwnd, icmdshow); updatewindow (hwnd); While (getmessage (& MSG, null, 0, 0) {translatemessage (& MSG ); dispatchmessage (& MSG);} return MSG. wparam;} lresult callback wndproc (hwnd, uint message, wparam W Param, lparam) {static hinstance; Switch (Message) {Case wm_create: hinstance = (lpcreatestruct) lparam)-> hinstance; return 0; Case wm_command: switch (loword (wparam) {Case idm_app_about: dialogbox (hinstance, text ("aboutbox"), hwnd, aboutdlgproc); Return 0;} break; Case wm_destroy: postquitmessage (0); Return 0;} return defwindowproc (hwnd, message, wparam, lparam);} bool callback aboutdlgproc (hwnd hdlg, uint Message, wparam, lparam) {Switch (Message) {Case wm_initdialog: Return true; Case wm_command: Switch (loword (wparam) {Case idok: enddialog (hdlg, 0); Return true;} break;} return false;} lresult callback ellippushwndproc (hwnd, uint message, wparam, lparam) {tchar sztext [40]; hbrush; HDC; paintstruct pS; rect; Switch (Message) {Case wm_paint: // the size of this rect is only for the getclient of the small OK Control Rect (hwnd, & rect); // obtain the text, and draw getwindowtext (hwnd, sztext, sizeof (sztext) with drawtext; HDC = beginpaint (hwnd, & PS ); // create the paint brush hbrush = createsolidbrush (getsyscolor (color_window); // select the device description table hbrush = (hbrush) SelectObject (HDC, hbrush); // set the color setbkcolor (HDC, HDC, getsyscolor (color_window); settextcolor (HDC, getsyscolor (color_windowtext); // Draw Ellipse (HDC, rect. left, rect. top, rect. right, rect. bottom); // write drawtext (HDC, sztext,-1, & rect, DT _ Singleline | dt_center | dt_vcenter); deleteobject (SelectObject (HDC, hbrush); endpaint (hwnd, & PS); Return 0; // The following case statement does not return 0, run the following command to trigger sendmessagecase wm_keyup: If (wparam! = Vk_space) break; Case wm_lbuttonup: // send a message to the upper window to trigger the idok under wm_command. The last parameter does not feel useful. I do not know why to pass this sendmessage (getparent (hwnd ), wm_command, getwindowlong (hwnd, gwl_id), (lparam) hwnd); Return 0;} return defwindowproc (hwnd, message, wparam, lparam );} //////////////////////////////////////// /// // custom is used in the Resource control, the code I wrote directly copies the resource files in the original program. //////////////////////////////////////// ////////////////////////////////

I went to drink with my teacher at noon, went to bed in the afternoon, and took the Mandarin test at night. Fortunately, I have finished writing it today.