diff --git a/gui.py b/gui.py
index e8818d9..ab96b39 100644
--- a/gui.py
+++ b/gui.py
@@ -1,5 +1,5 @@
 import sys
-from tkinter import Button, Frame, Label, Tk
+from tkinter import Button, Frame, Label, Tk, Toplevel
 from tkinter.filedialog import askdirectory, askopenfile
 
 from src.clangformat import clang_format, parse_clang_format_output
@@ -73,6 +73,17 @@ class GUI:
             self.parent, text="Ouvrir un dossier", command=self._open_directory
         ).grid(column=1, row=1)
 
+    def _show_info(self, msg: str) -> None:
+        title = f"Contenu de l'avertissement - {self.name}"
+        info = Toplevel()
+        info.resizable(False, False)
+        info.title(title)
+        Label(info, text=msg).pack()
+
+        width = max([len(line) for line in [title] + msg.splitlines()]) * 12
+        height = (3 + msg.count("\n")) * 10
+        info.geometry(f"{width}x{height}")
+
     def _analyse(self, start_row: int, path: str) -> None:
         """Analyse les données"""
 
@@ -88,16 +99,20 @@ class GUI:
 
             if parsed_output:
                 for error in parsed_output:
-                    Label(
+                    Button(
                         self.parent,
                         text=f"Avertissement dans {error.filename} "
-                        f"à la ligne {error.line_number},"
+                        f"à la ligne {error.line_number}, "
                         f"caractère {error.column_number}.",
-                    ).grid(column=0, row=idx, columnspan=1)
+                        borderwidth=0,
+                        justify="left",
+                        anchor="w",
+                        command=lambda: self._show_info(error.warning_content),
+                    ).grid(column=0, row=idx)
                     idx += 1
             else:
                 Label(
                     self.parent,
                     text=f"Aucun avertissement trouvé dans {file}.",
-                ).grid(column=0, row=idx, columnspan=1)
+                ).grid(column=0, row=idx)
                 idx += 1
diff --git a/src/clangformat.py b/src/clangformat.py
index 3ae79af..4706664 100644
--- a/src/clangformat.py
+++ b/src/clangformat.py
@@ -25,8 +25,9 @@ def clang_format(file_path) -> str:
 
 def parse_clang_format_output(output) -> list[ClangError]:
     error_pattern = (
-        r"(?P<filename>.+):(?P<line_number>\d+):(?P<column_number>\d+):"
-        r" warning: code should be clang-formatted \[(?P<warning_message>.+)\]"
+        r"(?P<filename>.+):(?P<line_number>\d+):(?P<column_number>\d+)"
+        r": warning: code should be clang-formatted \[(?P<warning_message>.+)\]"
+        r"\n(?P<warning_content>(.)*\n?(.)*)"
     )
     error_matches = re.finditer(error_pattern, output)
 
@@ -36,6 +37,7 @@ def parse_clang_format_output(output) -> list[ClangError]:
         line_number = int(error_match.group("line_number"))
         column_number = int(error_match.group("column_number"))
         warning_message = str(error_match.group("warning_message"))
+        warning_content = str(error_match.group("warning_content"))
 
         errors.append(
             ClangError(
@@ -43,6 +45,7 @@ def parse_clang_format_output(output) -> list[ClangError]:
                 line_number,
                 column_number,
                 warning_message[1:],
+                warning_content,
             )
         )
 
diff --git a/src/errors.py b/src/errors.py
index f480d46..2e49042 100644
--- a/src/errors.py
+++ b/src/errors.py
@@ -1,11 +1,17 @@
 class ClangError:
     def __init__(
-        self, filename: str, line_number: int, column_number: int, warning_message: str
+        self,
+        filename: str,
+        line_number: int,
+        column_number: int,
+        warning_message: str,
+        warning_content: str,
     ) -> None:
         self._filename = filename
         self._line_number = line_number
         self._column_number = column_number
         self._warning_message = warning_message
+        self._warning_content = warning_content
 
     @property
     def filename(self) -> str:
@@ -26,3 +32,8 @@ class ClangError:
     def warning_message(self) -> str:
         """Quelle est le nom de l'erreur"""
         return self._warning_message
+
+    @property
+    def warning_content(self) -> str:
+        """Quelle est le contenu de l'erreur"""
+        return self._warning_content