C + + methods for obtaining information in other program form controls

The example in this article describes how C + + obtains information in other program form controls. Share to everyone for your reference. The specific analysis is as follows:

This shows a way to get information about other program form controls,

Use the FindWindow API to find the text box handle and get the text with SendMessage (Wm_gettext)

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#include <windows.h> BOOL CALLBACK enumchildproc (H WND Hwnd,lparam LPARAM); int WINAPI WinMain (hinstance hinstance,hinstance hprevinstance,lpstr lpcmdline,int ncmdshow) {char classname[]= Notepad "; HWND Hwnd=::findwindow (classname,null); if (hWnd) {:: Enumchildwindows (hwnd,enumchildproc,0); return 0;} MessageBox (NULL, "fail!", "fail", MB_OK); return 0; BOOL CALLBACK Enumchildproc (HWND hwnd,lparam LPARAM) {char temp1[256],temp2[256];:: GetClassName (hwnd,temp1,255); if ( !::STRCMP (Temp1, "Edit")) {:: SendMessage (hwnd,wm_gettext,sizeof (TEMP2)/sizeof (char), (LPARAM) temp2); Handle to//edit, message, Receive buffer size, receive buffer pointer:: MessageBox (NULL,TEMP2, "get", MB_OK); return 0; }:: wsprintf (Temp2, "ClassName:%s", TEMP1); MessageBox (NULL,TEMP2, "CWnd", MB_OK); return true; }

I hope this article will help you with your C + + programming.