作者nith (skyl)
看板LinuxDev
标题Re: [问题] GTK+ widget 阵列与记忆体配置
时间Fri Jun 3 18:34:24 2011
※ 引述《VElysian (致中和)》之铭言：
: ※ [本文转录自 C_and_CPP 看板 #1DuzZJ3h ]
: 程式码(Code)：(请善用置底文网页, 记得排版)
: void ButtonCallBack( GtkWidget button, gpointer data );
: int main(int argc, char* argv[])
: {
: GtkWidget* button[3][3];
: button[0][0] = (GtkWidget*)g_malloc( sizeof(GtkWidget) * 3 * 3 );
: ...
: printf("toggle_button[%i][%i] = %p\n",
: 1, 2, toggle_button[1][2] );
: ...
: g_signal_connect(GTK_OBJECT( button[1][2] ),
: "clicked",
: GTK_SIGNAL_FUNC( ButtonCallBack ),
: (gpointer)button[0][0]);
: ...
: }
: void ButtonCallBack( GtkWidget button, gpointer data ) {
: printf("(GtkWidget*)data + %i*%i+%i = %p\n",
: 1, 3, 2, (GtkWidget*)data + 1 * NODE + 2 );
: }
你指标阵列配置记忆体的用法错了, 参考看看以下的方法
void ButtonCallBack( GtkWidget* button, gpointer data );
int main(int argc, char* argv[])
{
GtkWidget* button[3][3];
for ( int row = 0; row < 3; row++ )
for ( int col = 0; col < 3; col++ )
button[row][col] = (GtkWidget*)g_malloc( sizeof(GtkWidget) );
...
printf("toggle_button[%i][%i] = %p\n",
1, 2, toggle_button[1][2] );
...
g_signal_connect(GTK_OBJECT( button[1][2] ),
"clicked",
GTK_SIGNAL_FUNC( ButtonCallBack ),
(gpointer)button[0][0]);
...
}
void ButtonCallBack( GtkWidget* button, gpointer data ) {
printf("(GtkWidget*)data + %i*%i+%i = %p\n",
1, 3, 2, (GtkWidget*)data + 1 * NODE + 2 );
}
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