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POWinAPI window doesn't appear
primarykey
Id
6541953
data
AcceptedAnswerId
6543828
AnswerCount
1
ClosedDate
CommentCount
9
CommunityOwnedDate
CreationDate
2011-06-30T22:49:14.317
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0
LastActivityDate
2011-07-01T05:13:17.187
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0
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770646
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0
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1
Score
3
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761
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text
Body
<p>And I can't figure out why. My code:</p> <pre><code>#include <windows.h> #include <commctrl.h> #include <cstdio> #include <stdarg.h> #include <string> #include <cmath> #include <vector> #include "resources.hpp" using std::string; using std::vector; struct undostruct{ /* add later */}; char buffer[2048]; HWND statusbar; HINSTANCE hinst; vector<undostruct> undo; void show_error(const char* format,...){ va_list args; va_start(args,format); vsprintf(buffer,format,args); va_end(args); MessageBox(NULL,buffer,"ERROR",MB_OK);} HWND create_tooltip(HWND parent,char* tip,unsigned uid,unsigned extraflags=0){ HWND tt=CreateWindowEx(WS_EX_TOPMOST,TOOLTIPS_CLASS,NULL,WS_POPUP|TTS_NOPREFIX|TTS_ALWAYSTIP,0,0,0,0,parent,NULL,NULL,NULL); SetWindowPos(tt,HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE); TOOLINFO ti; ti.cbSize=sizeof(TOOLINFO); ti.uFlags=TTF_SUBCLASS|extraflags; ti.hwnd=parent; ti.hinst=NULL; ti.uId=uid; ti.lpszText=tip; GetClientRect(parent,&ti.rect); SendMessage(tt,TTM_ADDTOOL,0,(LPARAM)(LPTOOLINFO)&ti); return tt;} LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); class Font{ private: HFONT hfont; public: Font(const char* fname){ hfont=CreateFont(0,0,0,0,FW_NORMAL,false,false,false,DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH,fname);} ~Font(){ DeleteObject(hfont);} operator HFONT(){ return hfont;}}courier("Courier New"); bool get_filename(char* fname,int len,HWND hwnd,bool save){ OPENFILENAME ofn; ZeroMemory(&ofn,sizeof(OPENFILENAME)); ofn.lStructSize=sizeof(OPENFILENAME); ofn.hwndOwner=hwnd; ofn.lpstrFilter="Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0\0"; ofn.lpstrFile=fname; ofn.nMaxFile=len; ofn.lpstrTitle="Text Editor"; ofn.Flags=OFN_FILEMUSTEXIST|OFN_HIDEREADONLY; if(save){ return GetSaveFileName(&ofn);} else{ return GetOpenFileName(&ofn);}} int WINAPI WinMain(HINSTANCE hprev,HINSTANCE hInst,LPSTR cmdline,int cmdshow){ WNDCLASSEX wcex; //HACCEL haccel=LoadAccelerators(hInst,MAKEINTRESOURCE(ACCELS)); HWND hwnd; MSG msg; hinst=hInst; //Register the window wcex.cbSize=sizeof(WNDCLASSEX); wcex.style=CS_HREDRAW|CS_VREDRAW; wcex.lpfnWndProc=WndProc; wcex.cbClsExtra=0; wcex.cbWndExtra=0; wcex.hInstance=hinst; wcex.hIcon=NULL; wcex.hCursor=NULL; wcex.hbrBackground=(HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName=MAKEINTRESOURCE(MAINMENU); wcex.lpszClassName="ImageEditor"; wcex.hIconSm=NULL; if(!RegisterClassEx(&wcex)){ show_error("Error %i: Failed to register the window.",GetLastError()); return -1;} //Create the window hwnd=CreateWindow("ImageEditor","Image Editor",WS_VISIBLE|WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hinst,NULL); if(!hwnd){ show_error("Error %i: Failed to create the window.",GetLastError()); return -2;} //Show/Update the window ShowWindow(hwnd,cmdshow); UpdateWindow(hwnd); //Initialize common controls /*INITCOMMONCONTROLSEX iccex; iccex.dwICC=ICC_WIN95_CLASSES; iccex.dwSize=sizeof(INITCOMMONCONTROLSEX); InitCommonControlsEx(&iccex);*/ //Go into the main program loop while(GetMessage(&msg,NULL,0,0)){ //if(!TranslateAccelerator(hwnd,haccel,&msg)){ TranslateMessage(&msg); DispatchMessage(&msg);}//} return msg.wParam;} LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wparam,LPARAM lparam){ static int sizes[]={260,330,420,520}; switch(msg){ case WM_CREATE: statusbar=CreateWindow(STATUSCLASSNAME,"",WS_CHILD|WS_BORDER|WS_VISIBLE,-100,-100,10,10,hwnd,NULL,hinst,NULL); if(!statusbar){ show_error("Error %i: Failed to create the statusbar.",GetLastError());} //Description|Characters|Size|Lines|Line|Column SendMessage(statusbar,SB_SETPARTS,sizeof(sizes),(LPARAM)sizes); break; case WM_QUIT: DestroyWindow(hwnd); break; case WM_DESTROY: PostQuitMessage(0); break; case WM_COMMAND: //switch(LOWORD(wparam)){} //break; default: return DefWindowProc(hwnd,msg,wparam,lparam);} return 0;} </code></pre> <p>Also, my compiler doesn't recognize INITCOMMONCONTROLSEX when it should, which is commented out near the end of WinMain.</p>
Tags
<c++><winapi><window>
Title
WinAPI window doesn't appear
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