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| #include <windows.h>
#include <stdio.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
char szClassName[ ] = "CodeBlocksWindowsApp";
// J'en fait une global pour pouvoir "prendre" une erreur dans WinMain et l'affichcher dans la procedure windows
int erreur1;
// encore le même problème de portée
HINSTANCE instance;
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
SetLastError(0);
instance=hThisInstance;
WNDCLASSEX wincl; /* Data structure for the windowclass */
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default colour as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
// Ici, GetLastError renvoit 2
erreur1=GetLastError();
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Code::Blocks Template Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nCmdShow);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HWND handle=NULL;
switch (message) /* handle the messages */
{
case WM_CREATE:
{
int erreurAvCW=GetLastError();
SetLastError(0);
/// Renvoit class does not exist
handle=CreateWindow("BUTTON",
"test",
WS_CHILD | WS_VISIBLE,
5,
5,
383,
30,
hwnd,
NULL,
instance,
NULL);
int erreurApCW=GetLastError();
SetLastError(0);
FILE *fichierErreur=NULL;
fichierErreur=fopen("Débugage.txt", "a");
if (GetLastError() == ERROR_ALREADY_EXISTS) SetLastError(0);
if (fichierErreur==NULL)
{
MessageBox(NULL, "Impossible de créer ou d'ouvrir le fichier de débugage", "Erreur", MB_ICONERROR);
exit(0);
}
fprintf(fichierErreur, "Erreur 1 : %u\n", erreur1);
fprintf(fichierErreur, "Erreur au début du WM_CREATE, avant le CreateWindow du bouton : %u\n", erreurAvCW);
fprintf(fichierErreur, "Handle renvoyé par CreateWindow : %u\n", handle);
fprintf(fichierErreur, "Erreur après le CreateWindow du bouton : %u\n", erreurApCW);
fclose(fichierErreur);
}
break;
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
} |
RegisterClass qui plante mais ne renvoit pas l'erreur directement quand manifest
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